AT45DB642-TI Atmel, AT45DB642-TI Datasheet - Page 19
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AT45DB642-TI
Manufacturer Part Number
AT45DB642-TI
Description
IC FLASH 64MBIT 20MHZ 40TSOP
Manufacturer
Atmel
Datasheet
1.AT45DB642-TC.pdf
(37 pages)
Specifications of AT45DB642-TI
Format - Memory
FLASH
Memory Type
DataFLASH
Memory Size
64M (8192 pages x 1056 bytes)
Speed
20MHz Serial/5MHz Parallel
Interface
Parallel/Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
40-TSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT45DB642-TI
Manufacturer:
TI
Quantity:
3 500
Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
Main Memory Page Program through Buffers
Buffer Write
Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
1638F–DFLSH–09/02
represents 8 bits
Each transition
SI or I/O7 - I/O0
SI or I/O7 - I/O0
(INPUT)
(INPUT)
CS
CS
PAGE PROGRAM
MAIN MEMORY
SI or I/O7 - I/O0
PAGE (1056 BYTES)
BUFFER 1 (1056 BYTES)
BUFFER 1 TO
BUFFER 1
CMD
(INPUT)
WRITE
CMD
CS
PA12-5
SI
X
PA4-0, BFA10-8
X···X, BFA10-8
FLASH MEMORY ARRAY
CMD
MAIN MEMORY PAGE
PROGRAM THROUGH
BUFFER 1
I/O INTERFACE
THROUGH BUFFER 2
PAGE PROGRAM
MAIN MEMORY
PA12-5
BFA7-0
BFA7-0
Starts self-timed erase/program operation
PA4-0, XXX
n
I/O7 - I/O0
n
BUFFER 2 (1056 BYTES)
n+1
X···X
· Completes writing into selected buffer
n+1
BUFFER 2 TO
MAIN MEMORY
PAGE PROGRAM
BUFFER 2
WRITE
· Completes writing into selected buffer
· Starts self-timed erase/program operation
n = 1st byte read
n+1 = 2nd byte read
Last Byte
AT45DB642
Last Byte
19