28C17 16K Parallel EEPROM – Datasheet

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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 NoPin NameDescription
1BUSY’Busy Port Pin
2NCNo Connection Pin
3A7 Address Pin 7
4A6 Address Pin 6
5A5 Address Pin 5
6A4 Address Pin 4
7A3 Address Pin 3
8A2 Address Pin 2
9A1 Address Pin 1
10A0 Address Pin 0
11I/O 0 Data Inputs/Outputs 0
12I/O 1 Data Inputs/Outputs 1
13I/O 2 Data Inputs/Outputs 2
14GNDGround Pin
15I/O 3 Data Inputs/Outputs 3
16I/O 4 Data Inputs/Outputs 4
17I/O 5 Data Inputs/Outputs 5
18I/O 6Data Inputs/Outputs 6
19I/O 7Data Inputs/Outputs 7
20CE’Chip Enable Pin
21A10Address Pin 10
22OE’Output Enable
23A11 Address Pin 11
24A9 Address Pin 9
25A8 Address Pin 8
26NCNo Connection
27WE’ Write Enable Pin
28VCC 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: