Features
• Fast Read Access Time - 70 ns
• 5-Volt Only Reprogramming
• Sector Program Operation
– Single Cycle Reprogram (Erase and Program)
– 512 Sectors (128 bytes/sector)
– Internal Address and Data Latches for 128 Bytes
• Internal Program Control and Timer
• Hardware and Software Data Protection
• Fast Sector Program Cycle Time - 10 ms
• DATA Polling for End of Program Detection
• Low Power Dissipation
– 50 mA Active Current
– 100 µA CMOS Standby Current
• Typical Endurance > 10,000 Cycles
• Single 5V ± 10% Supply
• CMOS and TTL Compatible Inputs and Outputs
• Commercial and Industrial Temperature Ranges
512K (64K x 8)
5-volt Only
Flash Memory
AT29C512
Description
The AT29C512 is a 5-volt only in-system Flash programmable and erasable read only
memory (PEROM). Its 512K of memory is organized as 65,536 words by 8 bits. Man-
ufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers
access times to 70 ns with power dissipation of just 275 mW over the commercial tem-
perature range. When the device is deselected, the CMOS standby current is less
than 100 µA. The device endurance is such that any sector can typically be written to
in excess of 10,000 times.
(continued)
Pin Configurations
DIP Top View
Pin Name
A0 - A15
CE
Function
NC
NC
A15
A12
A7
1
2
3
4
5
6
7
8
9
32 VCC
31 WE
Addresses
30 NC
29 A14
28 A13
27 A8
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
A6
OE
A5
26 A9
A4
25 A11
24 OE
23 A10
22 CE
21 I/O7
20 I/O6
19 I/O5
18 I/O4
17 I/O3
WE
A3
A2 10
A1 11
I/O0 - I/O7
NC
A0 12
I/O0 13
I/O1 14
I/O2 15
GND 16
TSOP Top View
Type 1
PLCC Top View
A11
A9
1
32
OE
2
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A10
CE
A8
3
A13
A14
NC
WE
VCC
NC
NC
A15
A12
A7
4
I/O7
I/O6
I/O5
I/O4
I/O3
GND
I/O2
I/O1
I/O0
A0
5
A7
A6
A5
A4
A3
5
6
7
8
9
29 A14
6
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 I/O7
7
8
9
10
11
12
13
14
15
16
A2 10
A1 11
A0 12
I/O0 13
A6
A1
Rev. 0456C–10/98
A5
A2
A4
A3
1