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AT27C020-12PA Datasheet

  • AT27C020-12PA

  • x8 EPROM

  • 211.57KB

  • 11頁(yè)

  • ETC

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Features
鈥?/div>
Fast Read Access Time 鈥?55 ns
鈥?/div>
Low-power CMOS Operation
鈥?/div>
鈥?100 碌A(chǔ) Max. Standby
鈥?25 mA Max. Active at 5 MHz
JEDEC Standard Packages
鈥?32-lead 600-mil PDIP
鈥?32-lead PLCC
鈥?32-lead TSOP
5V
鹵=10%
Supply
High-reliability CMOS Technology
鈥?2,000V ESD Protection
鈥?200 mA Latch-up Immunity
Rapid
鈩?/div>
Programming Algorithm 鈥?100 碌s/Byte (Typical)
CMOS- and TTL-compatible Inputs and Outputs
Integrated Product Identification Code
Commercial, Industrial and Automotive Temperature Ranges
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
2-megabit
(256K x 8)
OTP EPROM
AT27C020
Description
The AT27C020 is a low-power, high performance, 2,097,152-bit, one-time program-
mable read-only memory (OTP EPROM) organized as 256K by 8 bits. It requires only
one 5V power supply in normal read mode operation. Any byte can be accessed
in less than 55 ns, eliminating the need for speed-reducing WAIT states on high-
(continued)
performance microprocessor systems.
Pin Configurations
Pin Name
A0 - A17
O0 - O7
CE
OE
PGM
Function
Addresses
Outputs
Chip Enable
Output Enable
Program Strobe
A7
A6
A5
A4
A3
A2
A1
A0
O0
PLCC Top View
A12
A15
A16
VPP
VCC
PGM
A17
PDIP Top View
VPP
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
GND
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
VCC
PGM
A17
A14
A13
A8
A9
A11
OE
A10
CE
07
06
05
04
03
TSOP 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
07
06
05
04
03
GND
02
01
O0
A0
A1
A2
A3
01
02
GND
03
04
05
06
14
15
16
17
18
19
20
5
6
7
8
9
10
11
12
13
4
3
2
1
32
31
30
29
28
27
26
25
24
23
22
21
A14
A13
A8
A9
A11
OE
A10
CE
07
Rev. 0570D鈥?5/00
1
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