收藏本站
93AA56A/B/C, 93LC56A/B/C, 93C56A/B/C
2.6
Erase/Write Disable and Enable
(EWDS/EWEN)
Once the EWEN instruction is executed, programming
remains enabled until an EWDS instruction is executed
or Vcc is removed from the device.
The 93XX56A/B/C powers up in the Erase/Write
Disable ( EWDS ) state. All programming modes must be
preceded by an Erase/Write Enable ( EWEN ) instruction.
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.
FIGURE 2-5:
EWDS TIMING
T CSL
CS
CLK
DI
1
0
0
0
0
x
???
x
FIGURE 2-6:
EWEN TIMING
T CSL
CS
CLK
DI
1
0
0
1
1
x
???
x
2.7 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 (if ORG pin is low or A-version
devices) or 16-bit (if ORG pin is high or B-version
devices) output string. The output data bits will toggle on
the rising edge of the CLK and are stable after the spec-
ified time delay (T PD ). Sequential read is possible when
CS is held high. The memory data will automatically cycle
to the next register and output sequentially.
FIGURE 2-7:
CS
CLK
READ TIMING
DI
1
1
0
A N
? ? ?
A0
DO
High-Z
0
Dx
???
D0
Dx
???
D0
Dx
???
D0
? 2003-2011 Microchip Technology Inc.
DS21794G-page 9
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
93LC66BXT/SN IC EEPROM 4KBIT 2MHZ 8SOIC
93LC66XT/SN IC EEPROM 4KBIT 2MHZ 8SOIC
93LC86/P IC EEPROM 16KBIT 3MHZ 8DIP
94104-044LF 94104-044LF PCB MJ LOW PROFILE
94152-088LF CONN MOD JACK 8-8 VERT PCB SHLD
9436-7600 CONN SOCKET 36POS CLOSED END
94729-002LF 6POS SNAP-IN SP.MODJACK LF
94908-588LF 588LF C/P PCB M/J
相关代理商/技术参数
93LC56AX-E/MC 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM
93LC56AXE/MS 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM
93LC56AX-E/MS 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM
93LC56AXE/MSG 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM
93LC56AXE/OT 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM
93LC56AX-E/OT 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM
93LC56AXE/OTG 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM
93LC56AXE/P 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K Microwire Compatible Serial EEPROM