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參數(shù)資料
| 型號： | S-29190A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | 64-Word x 16-Bit CMOS Serial EEPROM(1K位CMOS串行EEPROM) |
| 中文描述： | 64字× 16位的CMOS串行EEPROM（每1000位的CMOS串行EEPROM的） |
| 文件頁數(shù)： | 10/44頁 |
| 文件大小： | 208K |
| 代理商： | S-29190A |
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CMOS SERIAL E
2
PROM
S-29X90A Series
Seiko Instruments Inc.
9
Receiving a Start-Bit
Three-Wire Interface (DI-DO direct connection)
A start-bit can be recognized by latching the high level of DI at the rising edge of SK after changing CS to high
(Start-Bit Recognition). The write operation begins by inputting the write instruction and setting CS to low. The DO
pin then outputs low during the write operation and high at its completion by setting CS to high (Verify Operation).
Therefore, only after a write operation, in order to accept the next command by having CS go high, the DO pin is
switched from a state of high-impedance to a state of data output; but if it recognizes a start-bit, the DO pin returns
to a state of high-impedance (see Figure 3).
Make sure that data output from the CPU does not interfere with the data output from the serial memory IC when
you configure a 3-wire interface by connecting DI input pin and DO output pin. Such interference may cause a start-
bit fetch problem.
Although the normal configuration of a serial interface is a 4-wire interface to CS, SK, DI, and DO, a 3-wire interface
is also a possibility by connecting DI and DO. However, since there is a possibility that the DO output from the serial
memory IC will interfere with the data output from the CPU with a 3-wire interface, install a resistor between DI and
DO in order to give preference to data output from the CPU to DI(See Figure 10).
DI
DO
SIO
Figure 10 3-wire interface
CPU
S-29X90A
R : 10~100 k
相關PDF資料 |
PDF描述 |
|---|---|
| S-29290A | 128-Word x 16-Bit CMOS Serial EEPROM(2K位CMOS串行EEPROM) |
| S-29430 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-29430ADP | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-29430AFE | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-29430A | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| S-29190ADP | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29190AFJ | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29191A | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29191ADP | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29191AFJ | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
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