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application note AN102 AN102-1 design issues in high speed spi (hsspi) serial eeprom by ray kahidi introduction the availability of higher density serial eeproms means they are being designed into applications that were con- sidered far fetched just a few years ago. in many instances serial eeproms have replaced their byte wide counter parts as the ideal nonvolatile storage device. the increased capacity demands the transfer of larger blocks of information. a major bottleneck is the transfer speed of the interface between the eeprom and the con- troller. the new generation of spi serial devices from xicor attempt to remedy the problem by increasing the date transfer rate to 5mhz. this application note discusses the implementation of sys- tems based on various microcontrollers which are capable of 5mhz sustained throughput on the spi bus. the key benefit of higher throughput and reduced transfer time is higher system reliability. during system power fail- ures the microprocessor has a limited time to finish its cur- rent task and save all the important system parameters to the eeprom. the improved sp eed can quickly transfer up to 32 bytes to the internal buffer of the eeprom. in some cases (i.e. powerpc processors) the above opera- tion is transparent to the cpu, after the buffer address and transfer byte count are set prior to starting the spi controller. advanced features integrated on the hsspi serial eeproms include the block lock, which allows write con- trol to guard against inadvertent or unauthorized write operations. this is ideal for protecting sensitive data (i.e. kernel, setup parameters, security keys, id numbers, serial numbers). the status register is a great way to monitor performance of the device. when read, it returns information on the state of the internal write operations. by monitoring the wip bit the software can detect an early end of write, instead of waiting the maximum specified write time after the last byte was transferred to the device. the spi bus has many advantages over other commonly employed serial buses. one major benefit is that most microcontrollers have hardware capability to directly inter- face to the spi bus as the master. this reduces the soft- ware overhead required to operate the interface and frees up the cpu to handle other tasks at hand. improved upload time in the hsspi is apparent here by evaluating the result of comparison at different transfer clock rates: powerpc micro p rocessors and dsps the systems that can greatly benefit from the high speed spi are products based on the high performance micro- processors or dsps. the spi port on the powerpc processors (mpc821/23/ 60) is versatile. the clock rate is programmable to run at 5mhz using a 25mhz system clock. the clock control reg- ister allows modification of the clock phase and polarity to match the peripheral device. multiple transmit and receive buffers can be initialized for automatic process by the spi module, freeing up the main cpu. presence of slow devices on a fast spi bus forces the master controller to reload its baud rate generator with a new value anytime it communicates with that device. this lowers the overall system performance by increasing software overhead and time delays. clock size u p load time 100khz 64kb 327.68ms 2mhz 64kb 32.77ms 5mhz (hsspi) 64kb 13.11ms spiclk spimiso spimosi mpc821/23/60 x25650 25mhz cs so sck si cs powerpc
xicor application note AN102-2 AN102 there are a few dsp products in the market with on chip, fast spi ports. one, the motorola dsp56002, has a syn- chronous serial interface(ssi) port that can be configured to interface with an spi type device. this is done by selecting the synchronous mode, gated clock-on and on- demand mode. the programmable baud rate generator allows setting the transfer rate to 5 mhz. the interface is double byte buffered and requires extensive interface soft- ware for continuous data flow. 68hc16 qspi the qspi port on the m68hc16 is versatile with program- mable baud rate option. using a 16mhz system clock the clock speed can be programmed to operate at up to 4.1 mhz. the internal dual port ram is split into three seg- ments; command queue, transmit and receive buffers. all the cpu has to do is to refresh the command and transmit buffers and qspi takes care of the rest. the qspi timing is programmable, xicors high speed spi serial devices work in either mode 0 (sck clock idle state is low, input data is latched on the leading edge of the clock and output data is changed on the following edge) or mode 1 (sck clock idle state is high, output data is changed on the leading edge of sck and input data is latched on the fol- lowing edge of sck). the 68hc16 has four peripheral chip select (pcs0:3) pins that can be controlled by bit fields in the commands byte. general purpose synchronous communications port-mcs196, mcs251, mcs51 most microcontrollers are equipped with uarts which support synchronous communications mode. in the mcs251, mcs51 and mcs196 families the uart, in mode 0, configures the txd pin to output eight clock pulses and the rxd pin to function as a bidirectional data i/o. in the mcs51 and mcs251, the maximum clock rate is 1/12 of system clock. the mcs196 clock rate can be set to 4mhz using a 16mhz system clock. for half-duplex spi operation the si and so pins of the serial memories can be tied together txd rxd mcs196 x25650 16mhz cs si sck so cs

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Part #	Manufacturer	Description	Price	BuyNow Qty.
EVAL_PAN1026 11X2764	Panasonic Electronic Components	Evaluation Board, Bluetooth; Silicon Manufacturer:Panasonic; Silicon Core Number:Pan1026; Kit Application Type:Wireless Connectivity; Application Sub Type:Bluetooth; Kit Contents:Evaluation Board Pan1026; Product Range:- Rohs Compliant: Yes \|Panasonic EVAL_PAN1026	1: USD137.91	6
FMWAN102-10ELSF 98AK2512	Fairview Microwave Inc	Wr-102 Standard Gain Horn With 10 Dbi Gain, End Launch Sma Female Connector \|Fairview Microwave FMWAN102-10ELSF	25: USD1111.25 10: USD1133.62 5: USD1178.37 3: USD1215.66 1: USD1275.32	2
FMWAN102-15 98AK2517	Fairview Microwave Inc	Wr-102 Waveguide Antenna With 15 Dbi Gain And 7 Ghz To 11 Ghz \|Fairview Microwave FMWAN102-15	25: USD884.08 10: USD901.88 5: USD937.48 3: USD967.15 1: USD1014.62	1
FMWAN102-15SM 98AK2522	Fairview Microwave Inc	Wr-102 Standard Gain Horn With 15 Dbi Gain, Sma Male Connector \|Fairview Microwave FMWAN102-15SM	25: USD1150.58 10: USD1173.75 5: USD1220.08 3: USD1258.69 1: USD1320.47	1
FMWAN102-15NF 98AK2519	Fairview Microwave Inc	Wr-102 Standard Gain Horn With 15 Dbi Gain, N Female Connector \|Fairview Microwave FMWAN102-15NF	25: USD1150.58 10: USD1173.75 5: USD1220.08 3: USD1258.69 1: USD1320.47	1

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PEWAN102-20NM 3985-PEWAN102-20NMTB-ND	Pasternack Enterprises	WR102 GAIN HRN 7-11GHZ 20DBI	25: USD1064.8 10: USD1113.2 5: USD1161.6 1: USD1210	2
PEWAN102-20ELSF 3985-PEWAN102-20ELSFTB-ND	Pasternack Enterprises	WR102 GAIN HRN 7-11GHZ 20DBI	25: USD1064.8 10: USD1113.2 5: USD1161.6 1: USD1210	2
PEWAN1024 3985-PEWAN1024-ND	Pasternack Enterprises	WR-8 Waveguide Standard Gain Hor	25: USD1007.14 10: USD1028.57 5: USD1050 1: USD1071.43	1
PEWAN102-15SF 3985-PEWAN102-15SFTB-ND	Pasternack Enterprises	WR102 GAIN HRN 7-11GHZ 15DBI	25: USD1056 10: USD1104 5: USD1152 1: USD1200	1
PEWAN102-20ELNF 3985-PEWAN102-20ELNFTB-ND	Pasternack Enterprises	WR102 GAIN HRN 7-11GHZ 20DBI	25: USD1152.8 10: USD1205.2 5: USD1257.6 1: USD1310	1

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EVAL_PAN1026 11X2764	Panasonic Electronic Components	Evaluation Kit For PAN1026 Place and Play Bluetooth Module - Bulk (Alt: 11X2764)	1: USD137.91	0
ALAN-102 ALAN-102	Abracon Corporation	10/100 Base-T Single Port LAN Transformer - Rail/Tube (Alt: ALAN-102)	7200: USD2.68804 3600: USD2.76828 1512: USD2.84852 792: USD2.92876 720: USD3.009	0
EVAL_PAN1026 EVAL_PAN1026	Panasonic Electronic Components	Evaluation Kit For PAN1026 Place and Play Bluetooth Module - Boxed Product (Development Kits) (Alt: EVAL_PAN1026)	1000: USD134.7456 500: USD137.37735 100: USD140.0091 50: USD143.1672 30: USD147.378 20: USD149.4834 10: USD152.56781	0
AN102800V1 AN102800V1	Laird Connectivity Inc	ANTKIT,AFTB+MB8T - Bag (Alt: AN102800V1)		0
ECEA1AN102X ECE-A1AN102X	Panasonic Electronic Components	Aluminum Electrolytic Capacitor, 1000 uF, 10 V, ± 20%, 2000 hours @ 85°C, Radial Leaded - Bulk (Alt: ECE-A1AN102X)	10000: USD0.3671 1000: USD0.37427 800: USD0.38144 600: USD0.39005 400: USD0.40152 200: USD0.40726 100: USD0.41566	0

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RW16X94AN102JB00 72-RW16X94AN102JB00	Vishay Intertechnologies	Wirewound Resistors - Chassis Mount 1Kohms 5% Non-Inductive	1: USD50.81 10: USD43.18 20: USD40.65 50: USD38.51 100: USD37.08 200: USD35.66	5
ECE-A1AN102XB 667-ECE-A1AN102XB	Panasonic Electronic Components	Aluminum Electrolytic Capacitors - Radial Leaded 10VDC 1000uf SU BI-POL	1: USD1.11 10: USD0.852 100: USD0.647 500: USD0.492 1000: USD0.488 2500: USD0.466 5000: USD0.449 10000: USD0.424	759
ECE-A1AN102X 667-ECE-A1AN102X	Panasonic Electronic Components	Aluminum Electrolytic Capacitors - Radial Leaded 1000UF 10V SU BI-POLAR	1: USD1.11 10: USD0.754 100: USD0.642 500: USD0.502 1000: USD0.443 2500: USD0.413 5000: USD0.398	259
HIVISION ANNUAL MAINT. PLAN, 1024 NODES 566-942021124	Hirschmann Electronics GmbH & Co Kg	Calibration, Warranties, & Service Plans Annual Maintenance Plan (AMP) for Industrial HiVision for 1024 nodes	1: USD3659.27	0
54-CBSAN-1.0X2.0X0.5 861-54CBSAN102005	LeaderTech	EMI Gaskets, Sheets, Absorbers & Shielding 54-CBSAN-1.0X2.0X0.5--54S494--Circuit Board Shield--Formed Fence and Cover--Assembled	1: USD23.82 10: USD21.97 20: USD20.98 100: USD18.76 260: USD17.89	0

Part #	Manufacturer	Description	Price	BuyNow Qty.
FMWAN102-15 74901502	Fairview Microwave Inc	WR-102 Waveguide Antenna With 15 dBi Gain and 7 GHz to 11 GHz \| Fairview Microwave FMWAN102-15	1: USD393.29 3: USD365.77	0
FMWAN102-15SM 74901497	Fairview Microwave Inc	WR-102 Standard Gain Horn with 15 dBi gain, SMA Male connector \| Fairview Microwave FMWAN102-15SM	1: USD1175.59	0
FMWAN102-10SF 74901504	Fairview Microwave Inc	WR-102 Standard Gain Horn with 10 dBi gain, SMA Female connector \| Fairview Microwave FMWAN102-10SF	1: USD1165.54	0
FMWAN102-10ELSF 74901507	Fairview Microwave Inc	WR-102 Standard Gain Horn with 10 dBi gain, End Launch SMA Female connector \| Fairview Microwave FMWAN102-10ELSF	1: USD1135.4	0
A44040AACAN102A 72417734	Norgren	RODLESS CYLINDER, LINTRA LITE \| Norgren A44040AACAN102A	1: USD1235.25	0

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AN10-20A	AN Bolts			1

Part #	Manufacturer	Description	Price	BuyNow Qty.
AN102800V1-L	Laird Connectivity Inc		250: USD64.99 100: USD69.44 50: USD70.5 25: USD76.61 10: USD83.4 5: USD85.98 1: USD97.02	16
AN-1029-BR	Sealcon USA	Nickel Plated Brass Thread Adapter 1" NPT to PG 29 Threads	250: USD39.03 100: USD39.62 50: USD40.75 25: USD43.2 10: USD44.53 5: USD45.94 1: USD51.67	0

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FAN102MYTR	Freescale Semiconductor			2500

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AN102910	MISC		303: USD2.9552 71: USD3.3134 1: USD5.373	549

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ECE-A1AN102X ECE-A1AN102X	Panasonic Electronic Components	Aluminum Electrolytic Capacitors - Radial Leaded 1000UF 10V SU BI-POLAR	100: USD0.629 500: USD0.497 1000: USD0.439 2500: USD0.409	300
10-242067-245 10-242067-245	Amphenol Corporation	Circular MIL Spec Strain Reliefs & Adapters ADAPTER		0

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CBM05YTAN102 CBM05YTAN102	Viking Technology	Ferrite: bead; SMD; 300mA; 0805; R: 450mΩ; -55÷125°C; ±25%; Z: 1kΩ	4000: USD0.0068	0
CBM03YTAN102 CBM03YTAN102	Viking Technology	Ferrite: bead; SMD; 300mA; 0603; R: 550mΩ; -55÷125°C; ±25%; Z: 1kΩ	4000: USD0.00446	0
CBM03YTAN102-1 CBM03YTAN102-1	Viking Technology	Ferrite: bead; SMD; 800mA; 0603; R: 250mΩ; -55÷125°C; ±25%; Z: 1kΩ	12000: USD0.00463 8000: USD0.00475 4000: USD0.00496 1000: USD0.00552 500: USD0.00683 100: USD0.0134	0
CBM02YTAN102 CBM02YTAN102	Viking Technology	Ferrite: bead; SMD; 50mA; 0402; R: 1.5Ω; -55÷125°C; ±25%; Z: 1kΩ	10000: USD0.0064	0
CBM03YTAN102-2 CBM03YTAN102-2	Viking Technology	Ferrite: bead; SMD; 500mA; 0603; R: 450mΩ; -55÷125°C; ±25%; Z: 1kΩ	4000: USD0.00446	0

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AN102101 000000000002449226	Cherry Industrial Solutions	ZF Electronics		0
AN102800V2 000000000003701274	TE Connectivity	TE Connectivity		0

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ALAN-102 ALAN-102	Abracon Corporation	(Alt: ALAN-102)		0
ALAN-102-T ALAN-102-T	Abracon Corporation	- Tape and Reel (Alt: ALAN-102-T)		0
ECEA1AN102X ECEA1AN102X	Panasonic Electronic Components	Aluminum Electrolytic Capacitor, 1000 uF, 10 V, � 20%, 2000 hours @ 85�C, Radial Leaded (Alt: ECEA1AN102X)		0

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KAN1024CPG KAN1024CPG	Kanebridge	BUGLE DECK SCREW STEEL BLACK PHOSPHATE	1: USD0.1323 100: USD0.093 203: USD0.093	203

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LFSCM3GA40EP1-7FFAN1020C	Lattice Semiconductor Corporation	Stock		56
LFSCM3GA40EP1-5FFAN1020I	Lattice Semiconductor Corporation	Stock		132
LFSCM3GA40EP1-6FFAN1020C	Lattice Semiconductor Corporation	Stock		132

Part #	Manufacturer	Description	Price	BuyNow Qty.
AN102800V1-L	Laird Connectivity Inc		250: USD64.99 100: USD69.44 50: USD70.5 25: USD76.61 10: USD83.4 5: USD85.98 1: USD97.02	16

Part #	Manufacturer	Description	Price	BuyNow Qty.
ECE-A1AN102X	Panasonic Electronic Components	CAP.EL.1000uF 10V 12.5x20 5MM 85C 2000H AEC-Q200		0
ECE-A1AN102XB	Panasonic Electronic Components	CAP.EL.1000uF 10V 12.5x20 5MM 85C 2000H AEC-Q200		0

Part #	Manufacturer	Description	Price	BuyNow Qty.
PEWAN102-20ELNF PEWAN102-20ELNF	Pasternack Enterprises	Key Specifications. Waveguide Size WR-102 Gain Min 20 Beam Width, 3dB V 17.5 Beam Width, 3dB H 17.3 Frequency, Min 7 GHz Frequency, Max 11 GHz. WR-102 Standard Gain Horn with 20 dBi gain, End Launch N Female connector. PEWAN102-20ELNF standard gain horn antenna (also known as a waveguide horn antenna) is part of our huge selection of waveguide antennas. Pasternack standard gain horn antenna is manufactured with a WR-102 input and a waveguide to coaxial transition adapter. Our WR-102 standard gain horn antenna has a waveguide to coax adapter transition with a type N connector input that is female gender. WR-102 standard gain horn waveguide antenna with type N input has a minimum frequency of 7 GHz and a maximum frequency of 11 GHz. Pasternack PEWAN102-20ELNF WR-102 waveguide horn standard gain antenna is rated at a nominal 20 dB gain. Our 20 dB standard gain horn WR-102 waveguide antenna with type N adapter has a vertical beam width of 17.5 degrees and horizontal of 17.3 degrees at 3 dB. Pasternack is where to buy a WR-102 standard waveguide gain horn antenna with WR-102 input. This gain horn antenna is just one part of over 40,000 RF, microwave and millimeter wave guide components available and in-stock at our Irvine, CA United States warehouse. Our WR-102 standard waveguide horn antenna with N type female interface can ship worldwide the same day that it is purchased as with our other available RF parts.	1: USD1310 5: USD1257.6 10: USD1205.2 25: USD1152.8	0
PEWAN1024 PEWAN1024	Pasternack Enterprises	Key Specifications, Waveguide Size: WR-8, Frequency, Min: 90 GHz, Frequency, Max: 140 GHz, Beam Width V: 10, Beam Width H: 9. WR-8 Waveguide Standard Gain Horn Antenna Operating from 90 GHz to 140 GHz with a Nominal 25 dBi Gain with UG-387/U-Mod Round Cover Flange. PEWAN1024 WR-8 standard gain horn antenna is also known as a waveguide horn. This WR-8 standard gain horn antenna has a 25 dBi nominal gain and a round cover flange. Our 25 dBi WR-8 horn antenna has a minimum frequency of 90 GHz and a maximum frequency of 140 GHz. WR-8 standard gain horn waveguide antenna PEWAN1024 has a vertical beam width of 10 and horizontal of 9 degrees at 3 dB. This WR 8 standard gain horn antenna with 25 dBi is part of over 40,000 RF, microwave and millimeter wave components available from Pasternack. Our WR-8 waveguide horn antenna can ship worldwide the same day as it is purchased as with our other available RF parts.	1: USD1071.43 5: USD1050 10: USD1028.57	1
PEWAN102-15SF PEWAN102-15SF	Pasternack Enterprises	Key Specifications, Waveguide Size: WR-102, Gain Min: 15, Beam Width, 3dB V: 31, Beam Width, 3dB H: 32, Frequency, Min: 7 GHz, Frequency, Max: 11 GHz. WR-102 Standard Gain Horn with 15 dBi gain, SMA Female connector. PEWAN102-15SF standard gain horn antenna (also known as a waveguide horn antenna) is part of our huge selection of waveguide antennas. Pasternack standard gain horn antenna is manufactured with a WR-102 input and a waveguide to coaxial transition adapter. Our WR-102 standard gain horn antenna has a waveguide to coax adapter transition with a SMA connector input that is female gender. WR-102 standard gain horn waveguide antenna with SMA input has a minimum frequency of 7 GHz and a maximum frequency of 11 GHz. Pasternack PEWAN102-15SF WR-102 waveguide horn standard gain antenna is rated at a nominal 15 dB gain. Our 15 dB standard gain horn WR-102 waveguide antenna with SMA adapter has a vertical beam width of 31 and horizontal of 32 degrees at 3 dB. Pasternack is where to buy a WR-102 standard waveguide gain horn antenna with WR-102 input. This gain horn antenna is just one part of over 40,000 RF, microwave and millimeter wave guide components available and in-stock at our Irvine, CA United States warehouse. Our WR-102 standard waveguide horn antenna with SMA female interface can ship worldwide the same day that it is purchased as with our other available RF parts.	1: USD1200 5: USD1152 10: USD1104 25: USD1056	1
PEWAN102-10NF PEWAN102-10NF	Pasternack Enterprises	Key Specifications, Waveguide Size: WR-102, Gain Min: 10, Beam Width, 3dB V: 52.1, Beam Width, 3dB H: 51.6, Frequency, Min: 7 GHz, Frequency, Max: 11 GHz. WR-102 Standard Gain Horn with 10 dBi gain, N Female connector. PEWAN102-10NF standard gain horn antenna (also known as a waveguide horn antenna) is part of our huge selection of waveguide antennas. Pasternack standard gain horn antenna is manufactured with a WR-102 input and a waveguide to coaxial transition adapter. Our WR-102 standard gain horn antenna has a waveguide to coax adapter transition with a type N connector input that is female gender. WR-102 standard gain horn waveguide antenna with N type input has a minimum frequency of 7 GHz and a maximum frequency of 11 GHz. Pasternack PEWAN102-10NF WR-102 waveguide horn standard gain antenna is rated at a nominal 10 dB gain. Our 10 dB standard gain horn WR-102 waveguide antenna with type N adapter has a vertical beam width of 52.1 and horizontal of 51.6 degrees at 3 dB. Pasternack is where to buy a WR-102 standard waveguide gain horn antenna with WR-102 input. This gain horn antenna is just one part of over 40,000 RF, microwave and millimeter wave guide components available and in-stock at our Irvine, CA United States warehouse. Our WR-102 standard waveguide horn antenna with type N female interface can ship worldwide the same day that it is purchased as with our other available RF parts.	1: USD1130 5: USD1084.8 10: USD1039.6 25: USD994.4	2
PEWAN102-15SM PEWAN102-15SM	Pasternack Enterprises	Key Specifications, Waveguide Size: WR-102, Gain Min: 15, Beam Width, 3dB V: 31, Beam Width, 3dB H: 32, Frequency, Min: 7 GHz, Frequency, Max: 11 GHz. WR-102 Standard Gain Horn with 15 dBi gain, SMA Male connector. PEWAN102-15SM standard gain horn antenna (also known as a waveguide horn antenna) is part of our huge selection of waveguide antennas. Pasternack standard gain horn antenna is manufactured with a WR-102 input and a waveguide to coaxial transition adapter. Our WR-102 standard gain horn antenna has a waveguide to coax adapter transition with a SMA connector input that is male gender. WR-102 standard gain horn waveguide antenna with SMA input has a minimum frequency of 7 GHz and a maximum frequency of 11 GHz. Pasternack PEWAN102-15SM WR-102 waveguide horn standard gain antenna is rated at a nominal 15 dB gain. Our 15 dB standard gain horn WR-102 waveguide antenna with SMA adapter has a vertical beam width of 31 and horizontal of 32 degrees at 3 dB. Pasternack is where to buy a WR-102 standard waveguide gain horn antenna with WR-102 input. This gain horn antenna is just one part of over 40,000 RF, microwave and millimeter wave guide components available and in-stock at our Irvine, CA United States warehouse. Our WR-102 standard waveguide horn antenna with SMA male interface can ship worldwide the same day that it is purchased as with our other available RF parts.	1: USD1170 5: USD1123.2 10: USD1076.4 25: USD1029.6	1

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EVAL_PAN1026	Panasonic Electronic Components			18
MFAN1024-D	MFG UPON REQUEST			4
NT6AN1024F32AV-J2	Nanya Technology Corporation			2
ECE-A1AN102X	Panasonic Electronic Components			328
LKM0603YTAN102	MFG UPON REQUEST			11444

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