28C17 16K Parallel EEPROM – Datasheet

The AT28C17 is a low-power, high-performance Electrically Erasable, and Programmable 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. The AT28C17 is accessed like a static RAM for the read or write cycles without the need for external components.

During a byte write, the address and data are latched internally, freeing the microprocessor address and data bus for other operations. Following the initiation of a write cycle, the device will go to a busy state and automatically clear and write the latched data using an internal control timer. The device includes two methods for detecting the end of a write cycle, level detection of RDY/BUSY and DATA POLLING of I/O7.

28C17 Pinout

28C17 Pin Configuration

Pin No	Pin Name	Description
1	BUSY’	Busy Port Pin
2	NC	No Connection Pin
3	A7	Address Pin 7
4	A6	Address Pin 6
5	A5	Address Pin 5
6	A4	Address Pin 4
7	A3	Address Pin 3
8	A2	Address Pin 2
9	A1	Address Pin 1
10	A0	Address Pin 0
11	I/O 0	Data Inputs/Outputs 0
12	I/O 1	Data Inputs/Outputs 1
13	I/O 2	Data Inputs/Outputs 2
14	GND	Ground Pin
15	I/O 3	Data Inputs/Outputs 3
16	I/O 4	Data Inputs/Outputs 4
17	I/O 5	Data Inputs/Outputs 5
18	I/O 6	Data Inputs/Outputs 6
19	I/O 7	Data Inputs/Outputs 7
20	CE’	Chip Enable Pin
21	A10	Address Pin 10
22	OE’	Output Enable
23	A11	Address Pin 11
24	A9	Address Pin 9
25	A8	Address Pin 8
26	NC	No Connection
27	WE’	Write Enable Pin
28	VCC	Supply Voltage Pin

28C17 Key Feature

• 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 Output
• JEDEC Approved Byte Wide Pinout
• Commercial and Industrial Temperature Ranges

You can download this datasheet for 28C17 16K Parallel EEPROM – Datasheet – from the link given below: