Specification	AT28C256-20DM/883-815

Access Time	200 ns
Memory Format	EEPROM
Memory Interface	Parallel
Memory Organization	32K x 8
Memory Size	32 KB
Memory Type	Non-Volatile
Mounting Type	Through Hole
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-55 °C
Package / Case	15.24 mm
Package / Case	0.6 in
Package / Case	28-CDIP
Supplier Device Package	28-CERDIP
Technology	EEPROM
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V
Write Cycle Time - Word, Page	10 ms

AT28C256E Series

5V 256Kbit (32Kbit x 8) Parallel EEPROM with Software Data Protection

Part	Memory Size	Mounting Type	Supplier Device Package	Write Cycle Time - Word, Page	Memory Format	Technology	Operating Temperature [Min]	Operating Temperature [Max]	Memory Interface	Memory Organization	Voltage - Supply [Min]	Voltage - Supply [Max]	Memory Type	Package / Case	Package / Case	Package / Case	Access Time	Supplier Device Package [y]	Supplier Device Package [x]	Package / Case [y]	Package / Case [x]	Package / Case
Microchip Technology AT28C256-20DM/883-815	32 KB	Through Hole	28-CERDIP	10 ms	EEPROM	EEPROM	-55 °C	125 °C	Parallel	32K x 8	4.5 V	5.5 V	Non-Volatile	15.24 mm	0.6 in	28-CDIP	200 ns
Microchip Technology AT28C256-25LM/883-829	32 KB	Surface Mount	32-LCC (11.43x13.97)	10 ms	EEPROM	EEPROM	-55 °C	125 °C	Parallel	32K x 8	4.5 V	5.5 V	Non-Volatile			32-CLCC	250 ns
Microchip Technology AT28C256E-15UM/883-815	32 KB	Through Hole	28-CPGA	10 ms	EEPROM	EEPROM	-55 °C	125 °C	Parallel	32K x 8	4.5 V	5.5 V	Non-Volatile			28-BCPGA	150 ns	16.51	13.97
Microchip Technology AT28C256-15TU-T	32 KB	Surface Mount	28-TSOP	10 ms	EEPROM	EEPROM	-40 °C	85 °C	Parallel	32K x 8	4.5 V	5.5 V	Non-Volatile			28-TSSOP	150 ns			11.8 mm	0.465 "
Microchip Technology AT28C256E-20UM/883	32 KB	Through Hole	28-CPGA	10 ms	EEPROM	EEPROM	-55 °C	125 °C	Parallel	32K x 8	4.5 V	5.5 V	Non-Volatile			28-BCPGA	200 ns	16.51	13.97
Microchip Technology AT28C256-20LM/883	32 KB	Surface Mount	32-LCC (11.43x13.97)	10 ms	EEPROM	EEPROM	-55 °C	125 °C	Parallel	32K x 8	4.5 V	5.5 V	Non-Volatile			32-CLCC	200 ns
Microchip Technology AT28C256-20UM/883-815	32 KB	Through Hole	28-CPGA	10 ms	EEPROM	EEPROM	-55 °C	125 °C	Parallel	32K x 8	4.5 V	5.5 V	Non-Volatile			28-BCPGA	200 ns	16.51	13.97
Microchip Technology AT28C256E-15SU-T	32 KB	Surface Mount	28-SOIC	10 ms	EEPROM	EEPROM	-40 °C	85 °C	Parallel	32K x 8	4.5 V	5.5 V	Non-Volatile			28-SOIC	150 ns			7.5 mm	0.295 in
Microchip Technology AT28C256E-15PC	32 KB	Through Hole	28-PDIP	10 ms	EEPROM	EEPROM			Parallel	32K x 8	4.5 V	5.5 V	Non-Volatile		15.24 mm	28-DIP	150 ns					0.6 in
Microchip Technology AT28C256-15PU	32 KB	Through Hole	28-PDIP	10 ms	EEPROM	EEPROM	-40 °C	85 °C	Parallel	32K x 8	4.5 V	5.5 V	Non-Volatile		15.24 mm	28-DIP	150 ns					0.6 in

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 244.10
		25	$ 234.94
Microchip Direct	TUBE	1	$ 236.99
		25	$ 228.10
		100	$ 219.21
		1000	$ 207.35
		5000	$ 195.51
		10000	$ 183.66

Description

General part information

AT28C256E Series

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

Documents

Technical documentation and resources

Datasheet

AT28C256-20DM/883-815

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AT28C256-20DM/883-815

Deep-Dive with AI

Technical Specifications

AT28C256E Series

Pricing

Description

AT28C256E Series

Documents

Datasheet

Programmer Support for Parallel EEPROMs

EEPROM Data Protection

AT28C256 Industrial Grade 256-Kbit (32,768x8) Paged Parallel EEPROM Data Sheet

Software Chip Erase

Support for Third Party Memory Devices Programmer Sources

AT28C256E Series