AT27C2048 Datasheet, PDF (1/9 Pages) ATMEL Corporation – 2-Megabit 128K x 16 OTP EPROM

AT27C2048
Features
• Fast Read Access Time - 55 ns
• Low Power CMOS Operation
– 100 µA Maximum Standby
– 35 mA Maximum Active at 5 MHz
• JEDEC Standard Packages
– 40-Lead 600 mil PDIP
– 44-Lead PLCC
– 40-Lead TSOP (10 mm X 14 mm)
• Direct Upgrade from 512K bit and 1M bit
(AT27C516 and AT27C1024) EPROMs
• 5V ± 10% Power Supply
• High Reliability CMOS Technology
– 2,000V ESD Protection
– 200 mA Latchup Immunity
• Rapid^™ Programming Algorithm - 50 µs/word (typical)
• CMOS and TTL Compatible Inputs and Outputs
• Integrated Product Identification Code
• Commercial and Industrial Temperature Ranges
Description
The AT27C2048 is a low-power, high performance 2,097,152-bit one-time program-
mable read only memory (OTP EPROM) organized 128K by 16 bits. It requires a sin-
gle 5V power supply in normal read mode operation. Any word can be accessed in
less than 55 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.
Pin Configurations
PDIP Top View
(continued)
Pin Name Function
A0 - A16 Addresses
O0 - O15 Outputs
CE
Chip Enable
OE
Output Enable
PGM
Program
NC
Note:
No Connect
Both GND pins must be con-
nected.
VPP 1
CE 2
O15 3
O14 4
O13 5
O12 6
O11 7
O10 8
O9 9
O8 10
GND 11
O7 12
O6 13
O5 14
O4 15
O3 16
O2 17
O1 18
O0 19
OE 20
40 VCC
39 PGM
38 A16
37 A15
36 A14
35 A13
34 A12
33 A11
32 A10
31 A9
30 GND
29 A8
28 A7
27 A6
26 A5
25 A4
24 A3
23 A2
22 A1
21 A0
PLCC Top View
O12 7
O11 8
O10 9
O9 10
O8 11
GND 12
NC 13
O7 14
O6 15
O5 16
O4 17
39 A13
38 A12
37 A11
36 A10
35 A9
34 GND
33 NC
32 A8
31 A7
30 A6
29 A5
Note: PLCC package pins 1 and 23
are DON’T CONNECT.
TSOP Top View
Type 1
A9 1
A10 2
A11 3
A12 4
A13 5
A14 6
A15 7
A16 8
PGM 9
VCC 10
VPP 11
CE 12
O15 13
O14 14
O13 15
O12 16
O11 17
O10 18
O9 19
O8 20
40 GND
39 A8
38 A7
37 A6
36 A5
35 A4
34 A3
33 A2
32 A1
31 A0
30 OE
29 O0
28 O1
27 O2
26 O3
25 O4
24 O5
23 O6
22 O7
21 GND
2-Megabit
(128K x 16)
OTP EPROM
AT27C2048
0632B-A–06/97
1