Features
• Read Access Time – 100 ns
• Word-wide or Byte-wide Configurable
• 8-megabit Flash and Mask ROM Compatible
• Low-power CMOS Operation
– 100 µA Maximum Standby
– 50 mA Maximum Active at 5 MHz
• Wide Selection of JEDEC Standard Packages
– 42-pin 600 mil PDIP
– 44-lead PLCC
– 44-lead SOIC (SOP)
8-megabit
(512K x 16 or
1024K x 8)
– 48-lead TSOP (12 mm x 20 mm)
• 5V 10% Power Supply
• High-reliability CMOS Technology
– 2,000 ESD Protection
– 200 mA Latch-up Immunity
• Rapid™ Programming Algorithm – 50 µs/Word (Typical)
• CMOS- and TTL-compatible Inputs and Outputs
• Integrated Product Identification Code
• Commercial and Industrial Temperature Ranges
OTP EPROM
AT27C800
Description
The AT27C800 is a low-power, high-performance, 8,388,608-bit, UV-erasable, pro-
grammable read-only memory (EPROM) organized as either 512K by 16 or 1024K by
Not Recommended for
New Designs
(continued)
Pin Configurations
PDIP Top View
SOIC (SOP)
Pin Name
A0 - A18
O0 - O15
O15/A-1
Function
A18
A17
A7
1
2
3
4
5
6
7
8
9
42 NC
NC
A18
A17
A7
1
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
NC
Addresses
Outputs
41 A8
2
NC
40 A9
3
A8
A6
39 A10
38 A11
37 A12
36 A13
35 A14
34 A15
33 A16
32 BYTE/VPP
31 GND
30 O15/A-1
29 O7
4
A9
A5
A6
5
A10
A11
A12
A13
A14
A15
A16
BYTE/VPP
GND
O15/A-1
O7
A4
A5
6
A3
A4
7
Output/Address
A2
A3
8
A1
A2
9
Byte Mode/
Program Supply
A0 10
CE 11
GND 12
OE 13
O0 14
O8 15
O1 16
O9 17
O2 18
O10 19
O3 20
O11 21
A1
10
11
12
13
14
15
16
17
18
19
20
21
22
BYTE/VPP
A0
CE
GND
OE
O0
CE
OE
NC
Chip Enable
Output Enable
No Connect
28 O14
27 O6
O8
O14
O6
26 O13
25 O5
O1
O9
O13
O5
24 O12
23 O4
O2
O10
O3
O12
O4
22 VCC
O11
VCC
TSOP
Type 1
PLCC Top View
A15
A14
A13
A12
A11
A10
A9
1
48
A16
BYTE/VPP
GND
O15/A-1
O7
2
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
3
4
A4
A3
A2
7
8
9
39 A12
5
38 A13
37 A14
36 A15
35 A16
6
O14
O6
7
A1 10
A0 11
CE 12
GND 13
OE 14
O0 15
O8 16
O1 17
A8
8
O13
O5
NC
NC
NC
NC
NC
NC
NC
A18
A17
A7
9
34 BYTE/VPP
33 GND
32 O15/A-1
31 O7
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
O12
O4
VCC
O11
O3
30 O14
O10
O2
29 O6
O9
O1
A6
O8
A5
O0
Note: PLCC Package Pin 23 is
DON’T CONNECT.
Rev. 0801C–05/00
A4
OE
A3
GND
CE
A2
A1
A0
1
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