AT27LV040A_14 Datasheet, PDF (1/12 Pages) ATMEL Corporation – Dual voltage range operation

Features
• Fast read access time – 90ns
• Dual voltage range operation
– Low voltage power supply range, 3.0V to 3.6V, or
– Standard power supply range, 5V  10%
• Compatible with JEDEC standard Atmel^® AT27C040
• Low-power, 3.3V CMOS operation
– 20µA max standby (less than 1µA, typical) for V_CC = 3.6V
– 36mW max active at 5MHz for V_CC = 3.6V
• JEDEC-standard package
– 32-lead PLCC
• High-reliability CMOS technology
– 2,000V ESD protection
– 200mA latchup immunity
• Rapid programming algorithm – 100µs/byte (typical)
• CMOS- and TTL-compatible inputs and outputs
– JEDEC standard for LVTTL
• Integrated product identification code
• Industrial temperature range
• Green (Pb/halide-free) packaging option
4Mb (512K x 8)
Low Voltage,
One-time
Programmable,
Read-only Memory
Atmel AT27LV040A
1. Description
The Atmel AT27LV040A is a high-performance, low-power, low-voltage, 4,194,304-bit,
one-time programmable, read-only memory (OTP EPROM) organized as 512K by 8 bits. It
requires only one supply in the range of 3.0 to 3.6V in normal read mode operation, making
it ideal for fast, portable systems using battery power.
The Atmel innovative design techniques provide fast speeds that rival 5V parts while keep-
ing the low power consumption of a 3V supply. At V_CC = 3.0V, any byte can be accessed in
less than 90ns. With a typical power dissipation of only 18mW at 5MHz and V_CC = 3.3V, the
AT27LV040A consumes less than one-half the power of a standard, 5V EPROM. Standby
mode supply current is typically less than 1µA at 3.3V.
The AT27LV040A is available inan industry-standard, JEDEC-approved, one-time program-
mable (OTP) PLCC package. All devices feature two-line control (CE, OE) to give
designers the flexibility to prevent bus contention.
The AT27LV040A operating with V_CC at 3.0V produces TTL-level outputs that are compati-
ble with standard TTL logic devices operating at V_CC = 5.0V. The device is also capable of
standard, 5V operation, making it ideally suited for dual supply range systems or card prod-
ucts that are pluggable in both 3V and 5V hosts.
The AT27LV040A has additional features to ensure high quality and efficient production use.
The rapid programming algorithm reduces the time required to program the part and guar-
antees reliable programming. Programming time is typically only 100µs/byte. The
integrated 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. The AT27LV040A programs in exactly the same way as
a standard, 5V Atmel AT27C040, and uses the same programming equipment.
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