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AT45DB011B-XU

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
16
AT45DB011B
1984J–DFLASH–06/06
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
Each transition represents
8 bits and 8 clock c
y
cles
n = 1st byte written
n+1 = 2nd byte written
17
AT45DB011B
1984J–DFLASH–06/06
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
18
AT45DB011B
1984J–DFLASH–06/06
Detailed Bit-level Read Timing – Inactive Clock Polarity Low
Continuous Array Read (Opcode: 68H)
Main Memory Page Read (Opcode: 52H)
SI
0
1XX
CS
SO
SCK
12 63 64 65 66 67 68
HIGH-IMPEDANCE
D
7
D
6
D
5
D
2
D
1
D
0
D
7
D
6
D
5
DATA OUT
BIT 0
OF
PAGE n+1
BIT 2111
OF
PAGE n
LSB MSB
t
SU
t
V
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
t
SU
t
V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32

AT45DB011B-XU

Mfr. #:
Buy AT45DB011B-XU
Manufacturer:
Microchip Technology / Atmel
Description:
NOR Flash 1M SERIAL 2.7V - IND TEMP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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