AT49BV3218 Datasheet, PDF (1/25 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 Byte) Sectors with Individual Write Lockout
– Eight 4K Word (8K Byte) Sectors with Individual Write Lockout
• Fast Word Program Time – 15 µs
• Fast Sector Erase Time – 200 ms
• Dual-plane Organization, Permitting Concurrent Read while Program/Erase
Memory Plane A: Eight 4K Word and Fifteen 32K Word Sectors
Memory Plane B: Forty-eight 32K Word Sectors
• Erase Suspend Capability
– Supports Reading/Programming Data from Any Sector by Suspending Erase of
Any Different Sector
• Low-power Operation
– 25 mA Active
– 10 µA Standby
• Data Polling, Toggle Bit, Ready/Busy for End of Program Detection
• RESET Input for Device Initialization
• Sector Lockdown Support
• TSOP and CBGA Package Options
• Top or Bottom Boot Block Configuration Available
• 128-bit Protection Register
Description
The AT49BV/LV3218(T) is a 2.65- to 3.3-volt (BV)/3.0V to 3.6V (LV) 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 48-
lead TSOP and 48-ball CBGA packages. The device has CE and OE control signals to
avoid any bus contention. This device can be read or reprogrammed using a single
2.65V 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
Optional Power Supply
Data Inputs/Outputs
I/O15 (Data Input/Output, Word Mode) A-1 (LSB Address Input, Byte Mode)
Selects Byte or Word Mode
No Connect
32-megabit
(2M x 16/4M x 8)
3-volt Only
Flash Memory
AT49BV3218
AT49BV3218T
AT49LV3218
AT49LV3218T
Not Recommended for
New Designs. New
Designs Should Use
AT49BV/LV320(T)/321(T)
Rev. 2452F–FLASH–10/02
1