AT27BV020 Datasheet, PDF (1/10 Pages) ATMEL Corporation – 2-Megabit 256K x 8 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
• Compatible with JEDEC Standard AT27C020
• Low Power CMOS Operation
– 20 µA max. (less than 1 µA typical) Standby for V_CC = 3.6V
– 29 mW max. Active at 5 MHz for V_CC = 3.6V
• Wide Selection of JEDEC Standard Packages
– 32-Lead PLCC
– 32-Lead TSOP (8 x 20mm)
– 32-Lead VSOP (8 x 14mm)
– 42-Ball CBGA (8 x 8mm)
• High Reliability CMOS Technology
– 2,000V ESD Protection
– 200 mA Latchup Immunity
• Rapid^™ Programming Algorithm - 100 µs/byte (typical)
• CMOS and TTL Compatible Inputs and Outputs
– JEDEC Standard for LVTTL and LVBO
• Integrated Product Identification Code
• Commercial and Industrial Temperature Ranges
Description
The AT27BV020 is a high-performance, low-power, low-voltage 2,097,152-bit one-
time programmable read only memory (OTP EPROM) organized as 256K 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.
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Pin Configurations
CBGA Top View
Pin Name
Function
1234567
A0 - A17
O0 - O7
CE
OE
PGM
Address
Outputs
Chip Enable
Output Enable
Program Strobe
PLCC, Top View
A
GND O6 VCC VCC O2 OE GND
B
A17 O7 O4 NC NC O0 CE
C
A10 NC O5 NC O3 O1 A0
D
A14 A13 A9 NC NC A6 A3
E
A16 A11 PGM NC A7 A4 A1
F
A15 A12 A8 NC VPP A5 A2
AT27BV020
2-Megabit
(256K x 8)
Unregulated
Battery-Voltage^™
High Speed
OTP EPROM
AT27BV020
TSOP, VSOP Top View
Type 1
0902A-A–10/97
1