AT27C4096_14 Datasheet, PDF (1/13 Pages) ATMEL Corporation – Low-power CMOS operation

Features
• Fast read access time – 55ns
• Low-power CMOS operation
– 100µA max standby
– 40mA max active at 5MHz
• JEDEC standard packages
– 40-lead PDIP
– 44-lead PLCC
• Direct upgrade from 512Kbit, 1Mbit, and 2Mbit
Atmel^® AT27C516, AT27C1024, and AT27C2048) EPROMs
• 5V ± 10% supply
• High-reliability CMOS technology
– 2,000V ESD protection
– 200mA latchup immunity
• Rapid programming algorithm – 50µs/word (typical)
• CMOS- and TTL-compatible inputs and outputs
• Integrated product identification code
• Industrial temperature range
• Green (Pb/halide-free) packaging option
4Mb (256K x 16)
One-time
Programmable,
Read-only Memory
Atmel AT27C4096
1. Description
The Atmel AT27C4096 is a low-power, high-performance, 4,194,304-bit, one-time pro-
grammable, read-only memory (OTP EPROM) organized as 256K by 16 bits. It requires a
single 5V power supply in normal read mode operation. Any word can be accessed in less
than 55ns, eliminating the need for speed reducing WAIT states. The x16 organization
makes this part ideal for high-performance, 16- and 32-bit microprocessor systems.
In read mode, the AT27C4096 typically consumes 15mA. Standby mode supply current is
typically less than 10µA
The AT27C4096 is available in industry-standard, JEDEC-approved, one-time programma-
ble (OTP) PDIP and PLCC packages. The device features two-line control (CE, OE) to
eliminate bus contention in high speed systems.
With high-density 256K word storage capability, the AT27C4096 allows firmware to be
stored reliably and to be accessed by the system without the delays of mass storage media.
The AT27C4096 has additional features that ensure high quality and efficient production
use. The rapid programming algorithm reduces the time required to program the part and
guarantees reliable programming. Programming time is typically only 50µs/word. The Inte-
grated product identification code electronically identifies the device and manufacturer. This
feature is used by industry-standard programming equipment to select the proper pro-
gramming algorithms and voltages.
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