Features: Fast access time
- Available in speed options as fast as 90 ns
Low power consumption
- <10 µA typical CMOS standby current
JEDEC-approved pinout
- Plug-in upgrade for 1 Mbit and 2 Mbit EPROMs
- Easy upgrade from 28-pin JEDEC EPROMs
Single +5 V power supply
±10% power supply tolerance standard
100% Flashrite™ programming
- Typical programming time of 1 minute
Latch-up protected to 100 mA from 1 V to VCC + 1 V
High noise immunity
Compact 32-pin DIP, PDIP, PLCC packagesPinout
SpecificationsOTP Products . . . . . . . . . . . . . . . . .65°C to +125°C
All Other Products. . . . . . . . . . . . . 65°C to +150°C
Ambient Temperature
with Power Applied. . . . . . . . . . ..55°C to + 125°C
Voltage with Respect to VSS
All pins except A9, VPP ,
VCC (Note 1) . . . . . . . . . . . . . . 0.6 V to VCC +0.5 V
A9 and VPP (Note 2) . . . . . . . . . . .0.6 V to +13.5 V
VCC . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to +7.0 VDescription The Am27C040 is a 4 Mbit ultraviolet erasable programmable read-only memory. AM27C040 is organized as 512K bytes, operates from a single +5 V supply, has a static standby mode, and features fast single address location programming. The device is available in windowed ceramic DIP packages and plastic one-time programmable (OTP) packages.
Data can be typically accessed in less than 90 ns, allowing high-performance microprocessors to operate without any WAIT states. AM27C040 offers separate
Output Enable (OE#) and Chip Enable (CE#) controls,thus eliminating bus contention in a multiple bus microprocessor system.
AMD's CMOS process technology provides high speed, low power, and high noise immunity. Typical power consumption is only 100 mW in active mode,
and 50 W in standby mode. All signals are TTL levels, including programming signals. Bit locations may be programmed singly, in blocks, or at random. AM27C040 supports AMD's Flashrite programming algorithm (100 s pulses) resulting in typical programming time of 1 minute.
AM27C040 Data Sheet
