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 VCC = 3.6V
– 29 mW max. Active at 5 MHz for VCC = 3.6V
• Wide Selection of JEDEC Standard Packages
– 32-Lead PLCC
AT27BV020
– 32-Lead TSOP (8 x 20mm)
– 32-Lead VSOP (8 x 14mm)
– 42-Ball CBGA (8 x 8mm)
2-Megabit
(256K x 8)
• High Reliability CMOS Technology
– 2,000V ESD Protection
– 200 mA Latchup Immunity
Unregulated
Battery-Voltage™
High Speed
OTP EPROM
• 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
AT27BV020
power.
(continued)
CBGA Top View
Pin Configurations
1
2
3
4
5
6
7
Pin Name
A0 - A17
O0 - O7
CE
Function
Address
A
B
C
D
E
F
GND O6 VCC VCC O2 OE GND
A17 O7 O4 NC NC O0 CE
A10 NC O5 NC O3 O1 A0
A14 A13 A9 NC NC A6 A3
A16 A11 PGM NC A7 A4 A1
A15 A12 A8 NC VPP A5 A2
Outputs
Chip Enable
Output Enable
Program Strobe
OE
PGM
PLCC, Top View
TSOP, VSOP Top View
Type 1
0902A-A–10/97
1