參數(shù)資料
型號(hào): 93AA76B
廠商: Microchip Technology Inc.
英文描述: 8K Microwire Compatible Serial EEPROM
中文描述: 8K的微絲兼容串行EEPROM
文件頁數(shù): 8/26頁
文件大?。?/td> 289K
代理商: 93AA76B
93AA76A/B/C, 93LC76A/B/C, 93C76A/B/C
DS21796D-page 8
2004 Microchip Technology Inc.
2.6
ERASE/WRITE DISABLE And ENABLE (EWDS/EWEN)
The 93XX76A/B/C powers up in the ERASE/WRITE
Disable (
EWDS
) state. All programming modes must be
preceded by an ERASE/WRITE Enable (
EWEN
) instruc-
tion. Once the
EWEN
instruction is executed, program-
ming remains enabled until an
EWDS
instruction 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
operations. Execution of a
READ
instruction is
independent of both the
EWEN
and
EWDS
instructions.
FIGURE 2-3:
EWDS TIMING
FIGURE 2-4:
EWEN TIMING
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 2-5:
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
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93AA76B-I/MS 功能描述:電可擦除可編程只讀存儲(chǔ)器 8k 512 X 16 SERIAL EE,1.8V,IND RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
93AA76B-I/P 功能描述:電可擦除可編程只讀存儲(chǔ)器 8k 512 X 16 SERIAL EE,1.8V,IND RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
93AA76B-I/SN 功能描述:電可擦除可編程只讀存儲(chǔ)器 8k 512 X 16 SERIAL EE 1.8V IND RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
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93AA76BT-I/MS 功能描述:電可擦除可編程只讀存儲(chǔ)器 8k 512 X 16 SERIAL EE,1.8V,IND RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8