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參數(shù)資料
| 型號： | S-29U294A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | 2Kbit CMOS Serial EEPROM(2K位CMOS串行EEPROM) |
| 中文描述： | 2Kbit的CMOS串行EEPROM（2K位的CMOS串行EEPROM的） |
| 文件頁數(shù)： | 9/41頁 |
| 文件大?。?/td> | 185K |
| 代理商： | S-29U294A |
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CMOS SERIAL E
2
PROM
S-29UX94A Series
8
Seiko Instruments Inc.
Connecting to the CPU with a Serial Port
Memory Protection
Figure 9 Connectin Example
Figure 10 Serial Shift Timing
S-29UX94A
SO
SI
DI
DO
I/O
SK
CPU
SK
CS
DO
7
DO
6
DO
5
DO
4
DO
3
DO
2
DO
1
DO
0
DI
7
DI
6
DI
5
DI
4
DI
3
DI
2
DI
1
DI
0
SK
SI
SO
CPU data output
CPU data fetch
The S-29UX94A Series is capable of protecting the memory. So, the contents of the memory will not be miswritten due to
error run or malfunction of the CPU. When the PROTECT terminal is connected to GND or OPEN, write to Bank 1 in the
memory array is prohibited (50% of the memory can be protected starting from address 00). Because the pull-down
resistance is connected to the PROTECT terminal internally, the memory can be automatically protected when the PROTECT
terminal is OPEN. When the protection is valid, the data in the memory of Bank 1 will not be rewritten. However, because
the write control circuit inside the IC functions, the next instruction cannot be executed during the time period of writing (t
).
While write instruction is being input and write is being executed, always connect the PROTECT terminal to "H," "L" or OPEN,
and leave the input signal unchanged (see Figure 11).
Figure 11 PROTECT Terminal Input Signal Timing
PROTECT
CS
Verify
Write Instruction Input
DO
busy
Hi-Z
Hi-Z
ready
t
PR
0.2 s Min.
0.2 s Min.
DI
SK
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PDF描述 |
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| S-29U394A | 4Kbit CMOS Serial EEPROM(4K位CMOS串行EEPROM) |
| S-29UX94A | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-29UXX0A | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-29UXX1A | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-29U131A | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-29U330A | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29U330ADFE | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29U330AFS | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29U331A | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29U331ADFE | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
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