Am28F256 General Description
The Am28F256 is a 256 K Flash memory organized as 32 Kbytes of 8 bits each. AMD's Flash memories offer the most cost-effective and reliable readwrite nonvolatile random access memory. The Am28F256 is packaged in 32-pin PDIP, PLCC, and TSOP versions. It is designed to be reprogrammed and erased in- system or in standard EPROM programmers. The Am28F256 is erased when shipped from the factory. The standard Am28F256 offers access times as fast as 70 ns, allowing operation of high-speed microproces sors without wait states. To eliminate bus contention, the Am28F256 has separate chip enable CE#and output enable OE#controls.
Am28F256 Maximum Ratings
Storage Temperature. . . . . . . . . . . . 65°C to +150°C
Plastic Packages . . . . . . . . . . . . . . . 65°C to +125°C
Ambient Temperature
with Power Applied. . . . . . . . . . . . . .55°C to + 125°C
Voltage with Respect To Ground
All pins except A9 and VPP (Note 1) . . .2.0 V to +7.0 V
VCC(Note 1). . . . . . . . . . . . . . . . . . . . . 2.0 V to +7.0 V
A9 (Note 2). . . . . . . . . . . . . . . . . . . . .2.0 V to +14.0 V
VPP(Note 2). . . . . . . . . . . . . . . . . . . . 2.0 V to +14.0 V
Output Short Circuit Current (Note 3) . . . . . . . . 200 mA
Am28F256 Connection Diagram
Map list: ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789All