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參數(shù)資料
| 型號： | 93C46B-IP |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | EEPROM |
| 英文描述： | 1K 5.0V Microwire Serial EEPROM |
| 中文描述： | 一千5.0V微型導(dǎo)線串行EEPROM |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 180K |
| 代理商： | 93C46B-IP |
93C46B
DS21172D-page 6
Preliminary
1997 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) instruction.
Once the EWEN instruction is executed, programming
remains enabled until an EWDS instruction is executed
or Vcc 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 operations. Execution of
a READ instruction is independent of both the EWDS
and EWEN 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 16-bit 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
). Sequen-
tial read is possible when CS is held high. The memory
data will automatically cycle to the next register and
output sequentially.
FIGURE 3-4:
EWDS TIMING
FIGURE 3-5:
EWEN TIMING
FIGURE 3-6:
READ TIMING
CS
CLK
DI
1
0
0
0
0
X
X
T
CSL
1
X
CS
CLK
DI
0
0
1
1
X
T
CSL
CS
CLK
DI
DO
1
1
0
An
A0
HIGH-Z
0
Dx
D0
Dx
D0
Dx
D0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 93C46B-ISM | 1K 5.0V Microwire Serial EEPROM |
| 93C46B-ISN | 1K 5.0V Microwire Serial EEPROM |
| 93C46B-IST | 1K 5.0V Microwire Serial EEPROM |
| 93C46B-P | 1K 5.0V Microwire Serial EEPROM |
| 93C46B-SM | 1K 5.0V Microwire Serial EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 93C46B-ISM | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:1K 5.0V Microwire Serial EEPROM |
| 93C46B-ISN | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:1K 5.0V Microwire Serial EEPROM |
| 93C46B-IST | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:1K 5.0V Microwire Serial EEPROM |
| 93C46BP | 制造商:Microchip Technology Inc 功能描述: |
| 93C46B-P | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:1K 5.0V Microwire Serial EEPROM |
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