AT27BV040-12JU【PDF 1/13 页】IC OTP 4MBIT 120NS 32PLCC

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Features

? Fast read access time – 120ns

? Dual voltage range operation

– Unregulated battery power supply range, 2.7V to 3.6V, or

– Standard power supply range, 5V ? 10%

Compatible with JEDEC standard Atmel ? AT27C040

Low-power 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 packages

– 32-lead PLCC

– 32-lead TSOP

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 and LVBO

Integrated product identification code

Industrial temperature range

Green (Pb/halide-free, RoHS compliant) packaging

4Mb (512K x 8)

Unregulated Battery

Voltage, High-speed,

One-time

Programmable, Read

Only Memory

Atmel AT27BV040

Not recommended for

Description

new designs

The Atmel AT27BV040 chip is a high-performance, low-power, low-voltage, 4,194,304-bit,

one-time programmable, read only memory (EPROM) organized as 512K by 8 bits. It

requires only one supply in the range of 2.7 to 3.6V in normal read mode operation, making

it ideal for fast, portable systems using either regulated or unregulated 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 = 2.7V, any byte can be accessed in

less than 100ns. With a typical power dissipation of only 18mW at 5MHz and V CC = 3V, the

AT27BV040 consumes less than one-fifth the power of a standard, 5V EPROM. Standby

mode supply current is typically less than 1μA at 3V. The AT27BV040 simplifies system

design and stretches battery lifetime even further by eliminating the need for power supply

regulation.

The AT27BV040 is available in industry-standard, JEDEC-approved, one-time programma-

ble (OTP) PLCC and plastic TSOP packages. All devices feature two-line control (CE, OE)

to give designers the flexibility to prevent bus contention.

The AT27BV040 operating with V CC at 3.0V produces TTL-level outputs that are compatible

with standard TTL logic devices operating at V CC = 5.0V. At V CC = 2.7V, the part is compati-

ble with JEDEC-approved, low-voltage battery operation (LVBO) interface specifications.

The device is also capable of standard, 5V operation, making it ideally suited for dual supply

range systems or card products that are pluggable in both 3V and 5V hosts.

The Atmel AT27BV040 has additional features to ensure high quality and efficient produc-

tion use. The rapid programming algorithm reduces the time required to program the part

and guarantees reliable programming. Programming time is typically only 100μs/byte. The

0346H–EPROM–4/11

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