参数资料
型号: 93LC56A/P
元件分类: PROM
英文描述: 256 X 8 MICROWIRE BUS SERIAL EEPROM, PDIP8
封装: 0.300 INCH, PLASTIC, DIP-8
文件页数: 9/12页
文件大小: 222K
代理商: 93LC56A/P
93LC56A/B
DS21208C-page 6
1998 Microchip Technology Inc.
3.6
ERASE/WRITE Disable and Enable
(EWDS/EWEN)
The 93LC56A/B powers up in the ERASE/WRITE
Disable (EWDS) state. All programming modes must
be preceded by an ERASE/WRITE Enable (EWEN)
instruction. 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 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 8-bit (93LC56A) or 16-bit
(93LC56B) output string. The output data bits will tog-
gle on the rising edge of the CLK and are stable after
the specified time delay (TPD). Sequential read is pos-
sible when CS is held high. The memory data will auto-
matically 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
93LC56B/ST 128 X 16 MICROWIRE BUS SERIAL EEPROM, PDSO8
93LC56AX/SN 256 X 8 MICROWIRE BUS SERIAL EEPROM, PDSO8
93LC56BT/ST 128 X 16 MICROWIRE BUS SERIAL EEPROM, PDSO8
93LC56BX/SN 128 X 16 MICROWIRE BUS SERIAL EEPROM, PDSO8
93LC56BXT/SNA23 128 X 16 MICROWIRE BUS SERIAL EEPROM, PDSO8
相关代理商/技术参数
参数描述
93LC56ASN 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM
93LC56AST 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM
93LC56AT/SN 功能描述:电可擦除可编程只读存储器 256x8 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
93LC56AT/ST 功能描述:电可擦除可编程只读存储器 256x8 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
93LC56AT-E/CH 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:1K-16K Microwire Compatible Serial EEPROMs