The Microchip AT28C256 256Kbit parallel EEPROM offers access times to 150ns with power dissipation of 440mW. It operates on voltage range of 4.5V to 5.V. The deselected CMOS standby current is less than 200μA. It features an internal Error Correction Circuit for extended endurance and improved data retention, in Military version.
Fast read access time of 150ns Internal address and data latches for 64 bytes Internal control timer Page write cycle time of 3ms or 10ms maximum Low power dissipation Hardware and software data protection DATA polling for end of write detection Extended endurance of 100,000 cycles Data retention of 10 years CMOS and TTL compatible inputs and outputs Temperature range between -40°C and +85°C 32-Lead, Plastic J-Leaded Chip Carrier (PLCC) package
Attribute
Value
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
Data Retention
10yr
Number of Words
32K
Maximum Operating Temperature
+85 °C
Minimum Operating Temperature
-40 °C
Maximum Random Access Time
150ns
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