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AT45DB011-JI

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
AT45DB011
10
Each transition represents
8 bits and 8 clock c
y
cles
Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
Main Memory Page Program through Buffer
Buffer Write
Buffer to Main Memory Page Program
(Data from Buffer Programmed into Flash Page)
FLASH MEMORY ARRAY
PAGE (264 BYTES)
BUFFER (264 BYTES)
I/O INTERFACE
SI
BUFFER TO
MAIN MEMORY
PAGE PROGRAM
MAIN MEMORY PAGE
PROGRAM THROUGH
BUFFER
BUFFER
WRITE
SI
CMD n n+1 Last Byte
· Completes writing into buffer
· Starts self-timed erase/program operation
CS
r ···r, PA8-7
PA6-0, BFA8
BFA7-0
SI
CMD X
X···X, BFA8
BFA7-0
n
n+1
Last Byte
· Completes writing into buffer
CS
SI
CMD PA6-0, X X
CS
Starts self-timed erase/program operation
r ···r , PA8-7
n = 1st byte written
n+1 = 2nd byte written
AT45DB011
11
Read Operations
The following block diagram and waveforms illustrate the various read sequences available.
Main Memory Page Read
Main Memory Page to Buffer Transfer (Data from Flash Page Read into Buffer)
Buffer Read
FLASH MEMORY ARRAY
PAGE (264 BYTES)
BUFFER (264 BYTES)
I/O INTERFACE
MAIN MEMORY
PAGE TO
BUFFER
MAIN MEMORY
PAGE READ
BUFFER
READ
SO
SI
CMD
PA6-0, BA8
BA7-0 X
XXX
CS
n n+1
SO
r ···r , PA8-7
SI
CMD
PA6-0, X X
Starts reading page data into buffer
CS
SO
r ···r , PA8-7
SI
CMD
X
X···X, BFA8
BFA7-0
CS
n n+1
SO
X
Each transition represents
8 bits and 8 clock c
y
cles
n = 1st byte read
n+1 = 2nd byte read
AT45DB011
12
Detailed Bit-level Read Timing – Inactive Clock Polarity Low
Main Memory Page Read
Buffer Read
Status Register Read
SI
0
1
0
10
XXX
CS
SO
SCK
12345 60 61 62 63 64 65 66 67
XX
HIGH-IMPEDANCE
D
7
D
6
D
5
DATA OUT
COMMAND OPCODE
MSB
tSU
tV
SI
0
1
0
10
XXX
CS
SO
SCK
12345 36 37 38 39 40 41 42 43
XX
HIGH-IMPEDANCE
D
7
D
6
D
5
DATA OUT
COMMAND OPCODE
MSB
tSU
tV
SI
0
1
0
10
111
CS
SO
SCK
12345 7891011 12 16 17
HIGH-IMPEDANCE
D
7
D
6
D
5
STATUS REGISTER OUTPUT
COMMAND OPCODE
MSB
tSU
tV
6
D
1
D
0
D
7
LSB MSB
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

AT45DB011-JI

Mfr. #:
Buy AT45DB011-JI
Manufacturer:
Description:
IC FLASH 1M SPI 15MHZ 32PLCC
Lifecycle:
New from this manufacturer.
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