

The Microchip AT28C256 is a high-performance 256Kbit Parallel EEPROM available in both Industrial and Military temp ranges, offering access times to 150ns with power dissipation of 440mW. Deselected, CMOS standby current is less than 200μA.
Additional Features:
32 Kbits x 8 (256 Kbit)
5V ± 10% Supply
Parallel Interface
150ns access time
self-Timed Erase and Write Cycles (10 ms max)
Page Write and Byte Write
Data Polling for end of write detection
Low Power Consumption:
Read / Write current 40 mA (Max)
Standby current TTL 2 mA (Max), CMOS 200 μA (Max)
32 Kbits x 8 (256 Kbit)
5V ± 10% Supply
Parallel Interface
150ns access time
self-Timed Erase and Write Cycles (10 ms max)
Page Write and Byte Write
Data Polling for end of write detection
Low Power Consumption:
Read / Write current 40 mA (Max)
Standby current TTL 2 mA (Max), CMOS 200 μA (Max)

AT28C256-15SU, 256kbit Parallel EEPROM Memory, 150ns 28-Pin SOIC Parallel
Manufacturer:
Microchip
Manufacturer Part No:
AT28C256-15SU
Enrgtech Part No:
ET18605400
Warranty:
Manufacturer
£ 9.04
Checking for live stock
Memory Size:
256kbit
Interface Type:
Parallel
Package Type:
SOIC
Mounting Type:
Surface Mount
Pin Count:
28
Organisation:
32K x 8 bit
Minimum Operating Supply Voltage:
4.5 V
Maximum Operating Supply Voltage:
5.5 V
Programming Voltage:
4.5 → 5.5V
Number of Bits per Word:
8bit
Dimensions:
18.1 x 7.6 x 2.35mm
Data Retention:
10yr