A0–A21
CE0
CE1
CE2
OE#
WE#
RP#
VCC
STS
VPEN
CE Logic
128Mb, 64Mb, 32Mb
Q-FLASH MEMORY
FUNCTIONAL BLOCK DIAGRAM
(32Mb)
I/O
Control
Logic
Addr.
Buffer/
Latch
Input
Buffer
128KB Memory Block (0)
128KB Memory Block (1)
128KB Memory Block (2)
Power
(Current)
Control
Addr.
Counter
Command
Execution
Logic
State
Machine
VPP
Switch/
Pump
Write
Buffer
Y-
Decoder
128KB Memory Block (29)
128KB Memory Block (30)
128KB Memory Block (31)
Y - Select Gates
Sense Amplifiers
Write/Erase-Bit
Compare and Verify
DQ0–DQ15
Status
Register
Identification
Register
Query
Output
Buffer
128Mb, 64Mb, 32Mb Q-Flash Memory
MT28F640J3_7.p65 – Rev. 6, Pub. 8/02
5
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©2002, Micron Technology, Inc.