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
– 32-lead TSOP (8 x 20 mm)
– 32-lead VSOP (8 x 14 mm)
High Reliability CMOS Technology
– 2,000V ESD Protection
– 200 mA Latch-up 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
2-megabit
(256K x 8)
Unregulated
Battery-Voltage™
High-speed
OTP EPROM
Description
The AT27BV020 is a high-performance, low-power, low-voltage, 2,097,152-bit, onetime 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
(continued)
power.
AT27BV020
Pin Configurations
Pin Name
Function
A0 - A17
Addresses
O0 - O7
Outputs
CE
Chip Enable
OE
Output Enable
PGM
Program Strobe
NC
No Connect
29
28
27
26
25
24
23
22
21
14
15
16
17
18
19
20
5
6
7
8
9
10
11
12
13
O1
O2
GND
O3
O4
O5
O6
A7
A6
A5
A4
A3
A2
A1
A0
O0
4
3
2
1
32
31
30
A12
A15
A16
VPP
VCC
PGM
A17
PLCC, Top View
A14
A13
A8
A9
A11
OE
A10
CE
O7
TSOP, VSOP Top View
Type 1
A11
A9
A8
A13
A14
A17
PGM
VCC
VPP
A16
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
OE
A10
CE
O7
O6
O5
O4
O3
GND
O2
O1
O0
A0
A1
A2
A3
Rev. 0902D–04/01
1
