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AT27C400-70 Datasheet

  • AT27C400-70

  • 4-Megabit 256K x 16 or 512K x 8 OTP EPROM

  • 188.30KB

  • 10頁

  • ATMEL   ATMEL

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AT27C400
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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Fast Read Access Time - 70 ns
Word-wide or Byte-wide Configurable
4 Megabit Flash and Mask ROM Compatible
Low Power CMOS Operation
鈥?100
碌A(chǔ)
Maximum Standby
鈥?50 mA Maximum Active at 5 MHz
Wide Selection of JEDEC Standard Packages
鈥?40-Lead 600 mil PDIP
鈥?40-Lead SOIC (SOP)
鈥?48-Lead TSOP (12 mm x 20 mm)
5V
鹵
10% Power Supply
High Reliability CMOS Technology
鈥?2,000V ESD Protection
鈥?200 mA Latchup Immunity
Rapid
鈩?/div>
Programming Algorithm - 50
碌s/word
(typical)
CMOS and TTL Compatible Inputs and Outputs
Integrated Product Identification Code
Commercial and Industrial Temperature Ranges
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鈥?/div>
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4-Megabit
(256K x 16 or
512K x 8) OTP
EPROM
AT27C400
Preliminary
Description
The AT27C400 is a low-power, high-performance 4,194,304-bit one-time programma-
ble read only memory (OTP EPROM) organized as either 256K by 16 or 512K by 8
bits. It requires a single 5V power supply in normal read mode operation. Any word
can be accessed in less than 70 ns, eliminating the need for speed-reducing WAIT
states. The by-16 organization makes this part ideal for high-performance 16- and 32-
bit microprocessor systems.
PDIP Top View
SOIC (SOP)
Pin Configurations
Pin Name
A0 - A17
O0 - O15
O15/A-1
BYTE/VPP
CE
OE
NC
Function
Addresses
Outputs
Output/Address
Byte Mode/
Program Supply
Chip Enable
Output Enable
No Connect
A17
A7
A6
A5
A4
A3
A2
A1
A0
CE
GND
OE
O0
O8
O1
O9
O2
O10
O3
O11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
A8
A9
A10
A11
A12
A13
A14
A15
A16
BYTE/VPP
GND
015/A-1
O7
O14
O6
O13
O5
O12
O4
VCC
A17
A7
A6
A5
A4
A3
A2
A1
A0
CE
GND
OE
O0
O8
O1
O9
O2
O10
O3
O11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
A8
A9
A10
A11
A12
A13
A14
A15
A16
BYTE/VPP
GND
015/A-1
O7
O14
O6
O13
O5
O12
O4
VCC
TSOP
Type 1
A15
A14
A13
A12
A11
A10
A9
A8
NC
NC
NC
NC
NC
NC
NC
NC
A17
A7
A6
A5
A4
A3
A2
A1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
A16
BYTE/VPP
GND
015/A-1
I/O7
O14
O6
O13
O5
O12
O4
VCC
O11
O3
O10
O2
O9
O1
O8
O0
OE
GND
CE
A0
Note: Both GND pins must be
connected.
0844A-A鈥?/97
1

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