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参数资料
| 型号： | 93C66BE/P |
| 元件分类： | PROM |
| 英文描述： | 256 X 16 MICROWIRE BUS SERIAL EEPROM, PDIP8 |
| 封装： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件页数： | 10/13页 |
| 文件大小： | 102K |
| 代理商： | 93C66BE/P |
93C66A/B
DS21207C-page 6
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 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 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 (93C66A) or 16-bit
(93C66B) output string. The output data bits will toggle
on the rising edge of the CLK and are stable after the
specied time delay (TPD). 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:
EWDS TIMING
FIGURE 3-5:
EWEN TIMING
FIGURE 3-6:
READ TIMING
CS
CLK
DI
10
00
0
X
X
TCSL
1X
CS
CLK
DI
00
1
X
TCSL
CS
CLK
DI
DO
11
0
An
A0
HIGH-Z
0Dx
D0
Dx
D0
Dx
D0
相关PDF资料 |
PDF描述 |
|---|---|
| 93C66BTE/SN | 256 X 16 MICROWIRE BUS SERIAL EEPROM, PDSO8 |
| 93C66AE/SN | 512 X 8 MICROWIRE BUS SERIAL EEPROM, PDSO8 |
| 93C66BE/SN | 256 X 16 MICROWIRE BUS SERIAL EEPROM, PDSO8 |
| 93C66AE/P | 512 X 8 MICROWIRE BUS SERIAL EEPROM, PDIP8 |
| 93C66ATE/SN | 512 X 8 MICROWIRE BUS SERIAL EEPROM, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 93C66BEPG | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4K Microwire Compatible Serial EEPROM |
| 93C66BESN | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4K Microwire Compatible Serial EEPROM |
| 93C66BESNG | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4K Microwire Compatible Serial EEPROM |
| 93C66BEST | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4K Microwire Compatible Serial EEPROM |
| 93C66BESTG | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:4K Microwire Compatible Serial EEPROM |
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