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參數(shù)資料
| 型號： | 93C56BP |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | EEPROM |
| 英文描述： | 2K Microwire Compatible Serial EEPROM |
| 中文描述： | 2K微絲兼容串行EEPROM |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 252K |
| 代理商： | 93C56BP |
93C56A/B
DS21206B-page 6
Preliminary
1998 Microchip Technology Inc.
3.6
ERASE/WRITE Disable and Enable
(EWDS/EWEN)
The device powers up in the ERASE/WRITE Disable
(EWDS) state. All programming modes must be pre-
ceded by an ERASE/WRITE Enable (EWEN) instruc-
tion. Once the EWEN instruction is executed,
programming remains enabled until an EWDS instruc-
tion is executed or V
CC
is removed from the device. To
protect against accidental data disturbance, the EWDS
instruction can be used to disable all ERASE/WRITE
functions and should follow all programming opera-
tions. Execution of a READ instruction is independent
of both the EWEN and EWDS instructions.
3.7
READ
The READ instruction outputs the serial data of the
addressed memory location on the DO pin. A dummy
zero bit precedes the 8-bit (93C56A) or 16-bit
(93C56B) output string. The output data bits will toggle
on the rising edge of the CLK and are stable after the
specified time delay (T
PD
). Sequential read is possible
when CS is held high. The memory data will automati-
cally cycle to the next register and output sequentially.
FIGURE 3-4:
READ TIMING
FIGURE 3-5:
EWDS TIMING
FIGURE 3-6:
EWEN TIMING
CS
CLK
DI
DO
1
1
0
An
A0
HIGH-Z
0
Dx
D0
Dx
D0
Dx
D0
CS
CLK
DI
1
0
0
0
0
X
X
T
CSL
1
X
CS
CLK
DI
0
0
1
1
X
T
CSL
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| 93C56BSN | 2K Microwire Compatible Serial EEPROM |
| 93C56BST | 2K Microwire Compatible Serial EEPROM |
| 93C86-EP | 8K/16K 5.0V Microwire Serial EEPROM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 93C56BSN | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM |
| 93C56BST | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM |
| 93C56BT-E/CH | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:1K-16K Microwire Compatible Serial EEPROMs |
| 93C56BT-E/MC | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:1K-16K Microwire Compatible Serial EEPROMs |
| 93C56BT-E/MCG | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4K Microwire Compatible Serial EEPROM |
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