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AK93C45AF Datasheet(PDF) 7 Page - Asahi Kasei Microsystems

Part # AK93C45AF
Description  1K / 2K / 4K / 8Kbit Serial CMOS EEPROM
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK93C45AF Datasheet(HTML) 7 Page - Asahi Kasei Microsystems

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ASAHI KASEI
[AK93C45A/55A/65A/75A]
DAM01E-02
2002/06
- 7 -
EWEN / EWDS
When VCC is applied to the part, the part automatically powers up in the ERASE/WRITE Disable
state. In the ERASE/WRITE disable state, execution of WRITE instruction is disable. Before
WRITE instruction is executed, EWEN instruction must be executed. The ERASE/WRITE enable
state continues until EWDS instruction is executed or VCC is removed from the part.
Execution of a read instruction is independent of both EWEN and EWDS instructions.
EWEN / EWDS (AK93C45A)
EWEN / EWDS (AK93C55A/65A)
EWEN / EWDS (AK93C75A)
AK93C55A/65A output a logic "1" (Ready status),
if previous instruction is WRITE.
Start bit
Hi-Z
X: Don't care
EWDS=00
0
CS
SK
DI
DO
12345
10
11
0
0
1
0
67
XX
XX
EWEN=11
XX
89
AK93C75A output a logic "1" (Ready status),
if previous instruction is WRITE.
Start bit
Hi-Z
X: Don't care
EWDS=00
0
CS
SK
DI
DO
12345
12
13
0
0
1
0
67
XX
XX
EWEN=11
XX
89
XX
10
11
AK93C45A output a logic "1" (Ready status),
if previous instruction is WRITE.
Start bit
Hi-Z
X: Don't care
EWDS=00
0
CS
SK
DI
DO
1234
5
8
9
0
0
1
0
67
XX
XX
EWEN=11


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