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Details, datasheet, quote on part number:S-29191AFJ
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Datasheet text preview:
Contents
Features .... Pin Assignment ........ Pin Functions............ Block Diagram .......... Instruction Set .......... Absolute Maximum Ratings ..... Recommended Operating Conditions........ Pin Capacitance ....... Endurance ....... DC Electrical Characteristics ............ AC Electrical Characteristics ............ Operation......... Receiving a Start-Bit.......... Three-wire Interface (DI-DO direct connection) .. Connecting to the CPU with Serial Port ..... Memory Protection ... Characteristics .......... Ordering Information ......... Dimensions ...... 1 1 1 2 2 2 3 3 3 4 5 6 9 9 10 10 11 16 17
Rev.1.1
CMOS SERIAL E2PROM
S-29X91A Series
The S-29X91A Series is high speed, low power 1K/2K/4K-bit serial 2 E PROM with a wide operating voltage range. They are organized as 64-word x 16-bit, 128-word x 16-bit and 256-word x 16-bit, respectively. Each is capable of sequential read, where addresses are automatically incremented in 16-bit blocks. The S-29X91A Series is capable of protecting the memory, 50% of which can be protected starting from address 00. Interface is structured so that this IC can be directly connected to the CPU with serial ports. 8-bit instructions make it easy to prepare your own software.
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Features
· Low power consumption Standby : 1.0 µA Max. (VCC=6.5 V) Operating : 0.8 mA Max. (VCC=5.5 V) : 0.4 mA Max. (VCC=2.5 V) Low operating voltage range Write : 2.5 to 6.5 V Read : 1.8 to 6.5 V Sequential read capable Memory Protection
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Can be easily connected to the serial port CS Active "H" Endurance : 105 cycles/word Data retention : 10 years S-29191A : 1K bits S-29291A : 2K bits S-29391A : 4K bits
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Pin Assignment
8-pin DIP Top view CS SK DI DO 1 2 3 4 8 7 6 5 S-29191ADP S-29291ADP S-29391ADP VCC NC PROTECT GND NC VCC CS SK 8-pin SOP1 Top view 1 2 3 4 8 7 6 5 PROTECT GND DO DI
S-29191AFJ S-29291AFJ S-29391AFJ * differs depending on the package type : A : A type, (blank) : B type See n Dimensions.
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Figure 1
Pin Functions
Table 1 Name CS SK DI DO GND PROTECT NC VCC Pin Number SOP2 1 2 3 4 5 6 7 8 SSOP 3 4 5 6 7 8 1 2 Chip select input Serial clock input Serial data input Serial data output Ground Memory Protection Control Input Connected to GND or Open : Protection Valid Connected to Vcc : Protection Invalid No Connection Power supply Function
Seiko Instruments Inc.
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COMS SERIAL E2PROM S-29X91A Series
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Block Diagram
Memory array PROTECT Write Protection Circuit Bank 1* Bank 2 Address decoder VCC GND
Data register DI Mode decode logic CS
Output buffer
DO
SK
Clock generator * 50% of the memory can be protected starting from address 00 Figure 2
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Instruction Set
Table 2
Instruction
Start Bit
Ope code 1000xxx x100xxx 0001xxx 0010xxx 0011xxx S-29191A xxA5 to A0 xxA5 to A0 xxxxxxxx xxxxxxxx xxxxxxxx
Address S-29291A XA6 to A0 XA6 to A0 xxxxxxxx xxxxxxxx xxxxxxxx S-29391A A7 to A0 A7 to A0 xxxxxxxx xxxxxxxx xxxxxxxx
Data
READ (Read data) PROGRAM (Program data) WRITE (Write all) ERASE (Erase all) PEN (Program enable)
1 1 1 1 1
D15 to D0 Output* D15 to D0 Input D15 to D0 Input
xxxxxxxx xxxxxxxx xxxxxxxx PDS (Program disable) 1 0000xxx x : Doesn't matter. * : When 16-bit data of the specified address is output, the data of the next address is output.
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Absolute Maximum Ratings
Table 3 Parameter Symbol VCC VIN VOUT T bias T stg Ratings -0.3 to +7.0 -0.3 to VCC+0.3 -0.3 to VCC -50 to +95 -65 to +150 Unit V V V °C °C
Power supply voltage Input voltage Output voltage Storage temperature under bias Storage temperature
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Seiko Instruments Inc.
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