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AT45DB642-TC

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31
AT45DB642
1638F–DFLSH–09/02
Detailed Parallel Read Timing – SPI Mode 3
Continuous Array Read (Opcode: E8H)
Burst Array Read with Synchronous Delay (Opcode: E9H)
I/O7-I/O0
(INPUT)
CMD
ADDR
XXX
CS
I/O7-I/O0
(OUTPUT)
CLK
12 63 64 65 66 67
HIGH IMPEDANCE
DATA DATA DATA DATA DATA DATA DATA DATA DATA
BYTE 0
OF
PAGE n+1
BYTE 1055
OF
PAGE n
tSU
tV
DATA OUT
I/O7-I/O0
(INPUT)
CMD
ADDR
XXX
CS
I/O7-I/O0
(OUTPUT)
CLK
HIGH IMPEDANCE
DATA DATA
DATA OUT
tSU
tV
12
63 64 65 66
1
2
31
32
33
32 CLOCKS
DATA DATA
DATA
DATA
BYTE 1055
OF
PAGE n
BYTE 0
OF
PAGE n+1
DON'T CARE
32
AT45DB642
1638F–DFLSH–09/02
Detailed Parallel Read Timing – SPI Mode 3 (Continued)
Main Memory Page Read (Opcode: D2H)
Buffer Read (Opcode: D4H or D6H)
Status Register Read (Opcode: D7H)
I/07-I/O0
(INPUT)
CMD
ADDR
ADDR
ADDR
X
XXX
CS
I/07-I/O0
(OUTPUT)
CLK
12345 61 62 63 64 65 66 67
XX
HIGH IMPEDANCE
DATA DATA DATA
DATA OUT
COMMAND OPCODE
tSU
tV
DATA
68
I/O7-I/O0
(INPUT)
CMD
ADDR
ADDR
ADDR X
CS
I/O7-I/O0
(OUTPUT)
CLK
12345678
HIGH IMPEDANCE
DATA DATA DATA
DATA OUT
tSU
tV
DATA
9
I/O7-I/O0
(INPUT)
CMD
CS
I/O7-I/O0
(OUTPUT)
CLK
1 234
HIGH
IMPEDANCE
HIGH
IMPEDANCE
DATA DATA DATA
STATUS REGISTER
OUTPUT
tSU
tV
33
AT45DB642
1638F–DFLSH–09/02
Figure 1. Algorithm for Programming or Reprogramming of the Entire Array Sequentially
Notes: 1. This type of algorithm is used for applications in which the entire array is programmed sequentially, filling the array page-by-
page.
2. A page can be written using either a Main Memory Page Program operation or a Buffer Write operation followed by a Buffer
to Main Memory Page Program operation.
3. The algorithm above shows the programming of a single page. The algorithm will be repeated sequentially for each page
within the entire array.
START
MAIN MEMORY PAGE PROGRAM
THROUGH BUFFER
(82H, 85H)
END
provide address
and data
BUFFER WRITE
(84H, 87H)
BUFFER TO MAIN
MEMORY PAGE PROGRAM
(83H, 86H)
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AT45DB642-TC

Mfr. #:
Buy AT45DB642-TC
Manufacturer:
Microchip Technology / Atmel
Description:
NOR Flash 64M bit
Lifecycle:
New from this manufacturer.
Delivery:
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