AT49BV320 Datasheet, PDF (1/30 Pages) ATMEL Corporation – 32-megabit (2M x 16/4M x 8) 3-volt Only Flash Memory

Features
• Single Voltage Read/Write Operation: 2.65V to 3.3V (BV), 3.0V to 3.6V (LV)
• Access Time – 85 ns
• Sector Erase Architecture
– Sixty-three 32K Word (64K Bytes) Sectors with Individual Write Lockout
– Eight 4K Word (8K Bytes) Sectors with Individual Write Lockout
• Fast Word Program Time – 15 µs
• Fast Sector Erase Time – 200 ms
• Suspend/Resume Feature for Erase and Program
– Supports Reading and Programming from Any Sector by Suspending Erase
of a Different Sector
– Supports Reading Any Byte/Word by Suspending Programming of Any
Other Byte/Word
• Low-power Operation
– 25 mA Active
– 10 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, CBGA and µBGA Package Options
• Top or Bottom Boot Block Configuration Available
• 128-bit Protection Register
Description
The AT49BV/LV32X(T) is a 3.0-volt 32-megabit Flash memor y 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 48-lead TSOP, and
48-ball CBGA and µBGA packages. 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
Function
Addresses
Chip Enable
OE
Output Enable
WE
Write Enable
RESET
RDY/BUSY
VPP
I/O0 - I/O14
I/O15 (A-1)
Reset
READY/BUSY Output
Write Protection
Data Inputs/Outputs
I/O15 (Data Input/Output, Word Mode)
A-1 (LSB Address Input, Byte Mode)
BYTE
NC
VCCQ
Selects Byte or Word Mode
No Connect
Output Power Supply
32-megabit
(2M x 16/4M x 8)
3-volt Only
Flash Memory
AT49BV320
AT49BV320T
AT49BV321
AT49BV321T
AT49LV320
AT49LV320T
AT49LV321
AT49LV321T
Recommend Using
AT49BV320A(T)/322A(T)
for New Designs.
Rev. 1494H–FLASH–01/03
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