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AK6510C Datasheet(PDF) 8 Page - Asahi Kasei Microsystems

No. de Pieza. AK6510C
Descripción  SPI bus 32K/64Kbit Serial CMOS EEPROM
Descarga  17 Pages
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Fabricante  AKM [Asahi Kasei Microsystems]
Página de inicio  http://www.akm.com
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AK6510C Datasheet(HTML) 8 Page - Asahi Kasei Microsystems

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ASAHI KASEI
[AK6510C/12C]
DAP02E-04
2005/03
- 8 -
WRITE (WRITE SEQUENCE)
WRITE instruction can start the WRITE function to the memory cell array.
After CS pin changes high to low, op-code, address and data are input from SI pin.
After the
instruction input, the internal programming cycle starts when CS pin changes low to high.
After the
instructions are inputted, CS pin should change low to high after the last data bit (D0) inputs and
before next SCK clock rises.
Write function can start only at this timing.
AK6510C/12C can indicate the BUSY status by using RDSR instruction and READ the RDY bit
(Bit0) in the status register.
RDY is "1" indicates AK6510C/12C is in the programming cycle, and
RDY is "0" indicates AK6510C/12C is in the READY status.
AK6510C/12C outputs the "FF" when
RDSR instruction executes during the programming cycle.
Only RDSR instruction can be accepted
during programming cycle.
AK6510C/12C has Page Write mode, which can write the data within 32 bytes with one
programming cycle.
The input data sent to the shift register within 32 bytes.
If the number of
bytes exceeded 32, the address counter rolls over to the first address of the page.
Internal programming cycle starts after CS pin changes low to high.
After
WRITE
instruction,
AK6510C/12C
changes
to
Write
Disable
status
automatically.
AK6510C/12C needs WREN instruction before every WRITE instruction.
When WRITE instruction
is done while AK6510C/12C is in Write Disable status, WRITE instructions are ignored and
AK6510C/12C becomes standby status after CS changes to high.
AK6510C/12C can accept the
next instruction after CS becomes low.
WRITE instruction cannot write the data into the address of the protected block.
WRITE
Hi-Z
32
33
34
35
36
37
38
39
40
0123456789
10
11
12
13
23
22
0
0
0
0
01
0
A0
A1
A10
Hi-Z
CS
SCK
SI
SO
A11
24
25
30
31
D0
D1
D6
D7
Data(n)
CS
SCK
SI
SO
X = don’t care
Data(n+1)
D0
D1
D6
D7
D4
D5
D3
D2
D7
Data(n+31)
D0
D0
D1
D6
D7
D4
D5
D3
D2
A12
X
X
X
X
AK6510C: A12 is don't care


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