Microchip AT28HC256-12JU, 256kbit Parallel EEPROM Memory, 120ns 32-Pin PLCC Parallel

Save 2% when you buy 128 units

Subtotal (1 tube of 32 units)*

£306.56

(exc. VAT)

£368.00

(inc. VAT)

Add to Basket
Select or type quantity
Temporarily out of stock
  • Shipping from 07 November 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
Per Tube*
32 - 96£9.58£306.56
128 +£9.341£298.91

*price indicative

RS Stock No.:
177-1458
Mfr. Part No.:
AT28HC256-12JU
Brand:
Microchip
Find similar products by selecting one or more attributes.
Select all

Brand

Microchip

Memory Size

256kbit

Interface Type

Parallel

Package Type

PLCC

Mounting Type

Surface Mount

Pin Count

32

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

11.5 x 14.04 x 3.17mm

Maximum Operating Temperature

+85 °C

Minimum Operating Temperature

-40 °C

Number of Words

32K

Data Retention

10yr

Maximum Random Access Time

120ns

COO (Country of Origin):
TW
The Microchip AT28HC256 is a high-performance 256Kbit Parallel EEPROM available in both Industrial and Military temp ranges, offering access times to 70ns with power dissipation of 440mW. Deselected, CMOS standby current is less than 5mA. Accessed like static RAM for the read or write cycle without external components, it contains a 64-byte page register to allow writing of up to 64 bytes simultaneously. Features an internal Error Correction Circuit for extended endurance and improved data retention, in Military version. Optional Software Data Protection mechanism guards against inadvertent writes, and an extra 64 bytes of EEPROM enables device identification or tracking.

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)

Related links