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AT49BV322A Datasheet, PDF (1/31 Pages) ATMEL Corporation – 32-megabit (2M x 16/4M x 8) 3-volt Only Flash Memory | |||
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Features
⢠Single Voltage Read/Write Operation: 2.65V to 3.6V
⢠Access Time â 70 ns
⢠Sector Erase Architecture
â Sixty-three 32K Word (64K Bytes) Sectors with Individual Write Lockout
â Eight 4K Word (8K Bytes) Sectors with Individual Write Lockout
⢠Fast Word Program Time â 12 µs
⢠Fast Sector Erase Time â 300 ms
⢠Suspend/Resume Feature for Erase and Program
â Supports Reading and Programming from Any Sector by Suspending Erase
of a Different Sector
â Supports Reading Any Byte/Word in the Non-suspending Sectors by Suspending
Programming of Any Other Byte/Word
⢠Low-power Operation
â 12 mA Active
â 13 µA Standby
⢠Data Polling, Toggle Bit, Ready/Busy for End of Program Detection
⢠VPP Pin for Write Protection
⢠RESET Input for Device Initialization
⢠Sector Lockdown Support
⢠TSOP and CBGA Package Options
⢠Top or Bottom Boot Block Configuration Available
⢠128-bit Protection Register
⢠Minimum 100,000 Erase Cycles
⢠Common Flash Interface (CFI)
32-megabit
(2M x 16/4M x 8)
3-volt Only
Flash Memory
AT49BV322A
AT49BV322AT
Description
The AT49BV322A(T) is a 2.7-volt 32-megabit Flash memory organized as 2,097,152
words of 16 bits each or 4,194,304 bytes of 8 bits each. The x16 data appears on I/O0
- I/O15; the x8 data appears on I/O0 - I/O7. The memory is divided into 71 sectors for
erase operations. The device is offered in a 48-lead TSOP and a 48-ball CBGA pack-
age. The device has CE and OE control signals to avoid any bus contention. This
device can be read or reprogrammed using a single power supply, making it ideally
suited for in-system programming.
Pin Configurations
Pin Name
A0 - A20
CE
OE
WE
RESET
RDY/BUSY
VPP
I/O0 - I/O14
I/O15 (A-1)
BYTE
NC
Function
Addresses
Chip Enable
Output Enable
Write Enable
Reset
READY/BUSY Output
Write Protection
Data Inputs/Outputs
I/O15 (Data Input/Output, Word Mode)
A-1 (LSB Address Input, Byte Mode)
Selects Byte or Word Mode
No Connect
3308HâFLASHâ5/04
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