AT27BV256(1998) Просмотр технического описания (PDF) - Atmel Corporation
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производитель
AT27BV256
(Rev.:1998)
(Rev.:1998)
Atmel Corporation
AT27BV256 Datasheet PDF : 12 Pages
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Features
• Fast Read Access Time - 70 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 AT27C256R
• 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
• JEDEC Standard Surface Mount Packages
– 32-Lead PLCC
– 28-Lead 330-mil SOIC
– 28-Lead TSOP
• 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 AT27BV256 is a high performance, low power, low voltage 262,144-bit one-time
programmable read only memory (OTP EPROM) organized as 32K by 8 bits. It
requires only one supply in the range of 2.7V to 3.6V in normal read mode operation,
making it ideal for fast, portable systems using either regulated or unregulated battery
power.
(continued)
Pin Configurations
Pin Name
A0 - A14
O0 - O7
CE
OE
NC
Function
Addresses
Outputs
Chip Enable
Output Enable
No Connect
PLCC Top View
SOIC Top View
VPP 1
A12 2
A7 3
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
O0 11
O1 12
O2 13
GND 14
28 VCC
27 A14
26 A13
25 A8
24 A9
23 A11
22 OE
21 A10
20 CE
19 O7
18 O6
17 O5
16 O4
15 O3
A6 5
A5 6
A4 7
A3 8
A2 9
A1 10
A0 11
NC 12
O0 13
29 A8
28 A9
27 A11
26 NC
25 OE
24 A10
23 CE
22 O7
21 O6
Note: PLCC package pins 1 and 17 are
DON’T CONNECT.
OE 22
A11 23
A9 24
A8 25
A13 26
A14 27
VCC 28
VPP 1
A12 2
A7 3
A6 4
A5 5
A4 6
A3 7
TSOP Top View
Type 1
21 A10
20 CE
19 O7
18 O6
17 O5
16 O4
15 O3
14 GND
13 O2
12 O1
11 O0
10 A0
9 A1
8 A2
256K (32K x 8)
Unregulated
Battery-Voltage™
High Speed
OTP EPROM
AT27BV256
Rev. 0601B–10/98
1
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