64 Megabit (8 M x 8-Bit/4 M x 16-Bit)
CMOS 3.0 Volt-only, Simultaneous Operation Flash
Memory and 16 Mbit (1 M x 16-Bit) pSRAM
General Description
Am49DL640G Features
The Am49DL640G is a 64 megabit, 3.0 volt-only flash memory device, organized as
4,194,304 words of 16 bits each or 8,388,608 bytes of 8 bits each. Word mode data
appears on DQ15–DQ0; byte mode data appears on DQ7–DQ0. The device is designed
to be programmed in-system with the standard 3.0 volt VCC supply, and can also
be programmed in standard EPROM programmers.
Data can be continuously read from one bank while executing erase/program
functions in another bank.
Zero latency between read and write operations
Flexible Bank™ architecture
Read may occur in any of the three banks not being written or erased.
Four banks may be grouped by customer to achieve desired bank divisions.
Manufactured on 0.17 µm process technology
SecSi™ (Secured Silicon) Sector: Extra 256 Byte
sector
Factory locked and identifiable: 16 bytes available for secure, random
factory Electronic Serial Number; verifiable as factory locked through
autoselect function. ExpressFlash option allows entire sector to be
available for factory-secured data
Customer lockable: Sector is one-time programmable. Once sector is
locked, data cannot be changed.
Zero Power Operation
Sophisticated power management circuits reduce power consumed during
inactive periods to nearly zero.
Boot Sectors
Top and bottom boot sectors in the same device
Compatible with JEDEC standards
Pinout and software compatible with single-power-supply flash standard
