AT27BV1024_07 Datasheet, PDF (1/14 Pages) ATMEL Corporation – 1-Megabit (64K x 16) Unregulated Battery-Voltage High-Speed OTP EPROM

Features
• Fast Read Access Time – 90 ns
• Dual Voltage Range Operation
– Unregulated Battery Power Supply Range, 2.7V to 3.6V
or Standard 5V ± 10% Supply Range
• Pin Compatible with JEDEC Standard AT27C1024
• Low Power CMOS Operation
– 20 µA Max (Less than 1 µA Typical) Standby for V_CC = 3.6V
– 36 mW Max Active at 5 MHz for V_CC = 3.6V
• JEDEC Standard Surface Mount Packages
– 44-lead PLCC
– 40-lead VSOP
• High Reliability CMOS Technology
– 2,000V ESD Protection
– 200 mA Latchup Immunity
• Rapid Programming Algorithm – 100 µs/Word (Typical)
• CMOS and TTL Compatible Inputs and Outputs
– JEDEC Standard for LVTTL and LVBO
• Integrated Product Identification Code
• Industrial Temperature Range
1. Description
The AT27BV1024 is a high-performance, low-power, low-voltage 1,048,576-bit one-
time programmable read-only memory (OTP EPROM) organized as 64K by 16 bits. It
requires only one supply in the range of 2.7V to 3.6V in normal read mode operation.
The by-16 organization makes this part ideal for portable and handheld 16- and 32-bit
microprocessor based systems using either regulated or unregulated battery power.
Atmel’s innovative design techniques provide fast speeds that rival 5V parts while
keeping the low power consumption of a 3V supply. At V_CC = 2.7V, any word can be
accessed in less than 120 ns. With a typical power dissipation of only 18 mW at 5 MHz
and V_CC = 3V, the AT27BV1024 consumes less than one fifth the power of a standard
5V EPROM.
Standby mode supply current is typically less than 1 µA at 3V. The AT27BV1024 sim-
plifies system design and stretches battery lifetime even further by eliminating the
need for power supply regulation.
The AT27BV1024 is available in industry standard JEDEC-approved one-time pro-
grammable (OTP) plastic PLCC and VSOP packages. All devices feature two-line
control (CE, OE) to give designers the flexibility to prevent bus contention.
The AT27BV1024 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 compatible with JEDEC approved low voltage battery operation (LVBO)
interface specifications. The device is also capable of standard 5-volt operation mak-
ing it ideally suited for dual supply range systems or card products that are pluggable
in both 3-volt and 5-volt hosts.
Atmel’s AT27BV1024 has additional features to ensure high quality and efficient
production use. The Rapid Programming Algorithm reduces the time required to pro-
gram the part and guarantees reliable programming. Programming time is typically
only 100 µs/word. The Integrated Product Identification Code electronically identifies
1-Megabit
(64K x 16)
Unregulated
Battery-Voltage
High-Speed
OTP EPROM
AT27BV1024
0631E–EPROM–12/07