Rainbow Electronics AT28C17 - Manual

1
Features
• Fast Read Access Time - 150 ns
• Fast Byte Write - 200 µs or 1 ms
• Self-Timed Byte Write Cycle
– Internal Address and Data Latches
– Internal Control Timer
– Automatic Clear Before Write
• Direct Microprocessor Control
– DATA POLLING
– READY/BUSY Open Drain Output
• Low Power
– 30 mA Active Current
– 100
µa CMOS Standby Current
• High Reliability
– Endurance: 10 4 or 10 5 Cycles
– Data Retention: 10 Years
• 5V
±
10% Supply
• CMOS & TTL Compatible Inputs and Outputs
• JEDEC Approved Byte Wide Pinout
• Commercial and Industrial Temperature Ranges
Description
The AT28C17 is a low-power, high-performance Electrically Erasable and Program-
mable Read Only Memory with easy to use features. The AT28C17 is a 16K memory
organized as 2,048 words by 8 bits. The device is manufactured with Atmel’s reliable
nonvolatile CMOS technology.
16K (2K x 8)
Parallel
EEPROMs
AT28C17
Rev. 0541B–10/98
Pin Configurations
Pin Name Function
A0 - A10 Addresses
CE Chip Enable
OE Output Enable
WE Write Enable
I/O0 - I/O7 Data Inputs/Outputs
RDY/BUSY Ready/Busy Output
NC No Connect
DC Don’t Connect
PDIP, SOIC
Top View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RDY/BUSY
NC
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
VCC
WE
NC
A8
A9
NC
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
PLCC
Top View
Note: PLCC package pins 1 and 17 are
DON’T CONNECT.
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
A6
A5
A4
A3
A2
A1
A0
NC
I/O0
A8
A9
NC
NC
OE
A10
CE
I/O7
I/O6
4 3 2 1
32 31 30
14 15 16 17 18 19 20
I/O1 I/O2
GND
DC
I/O3 I/O4 I/O5
A7 NC RDY/BUSY DC VCC WE NC
(continued)