AT28C64B Series

5V 64Kbit (8Kbit x 8) Parallel EEPROM with Software Data Protection

Catalog

5V 64Kbit (8Kbit x 8) Parallel EEPROM with Software Data Protection

Part	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Memory Size	Memory Format	Package / Case	Package / Case [x]	Package / Case [y]	Memory Interface	Memory Type	Memory Organization	Technology	Supplier Device Package	Write Cycle Time - Word, Page	Access Time	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Package / Case	Supplier Device Package [y]	Supplier Device Package [x]
Microchip Technology AT28C64-20SI	Surface Mount	4.5 V	5.5 V	64 Kbit	EEPROM	28-SOIC	0.295 in	7.5 mm	Parallel	Non-Volatile	8 K	EEPROM	28-SOIC	1 ms	200 ns	-40 °C	85 °C
Microchip Technology AT28C64-20PC	Through Hole	4.5 V	5.5 V	64 Kbit	EEPROM	28-DIP			Parallel	Non-Volatile	8 K	EEPROM	28-PDIP	1 ms	200 ns			0.6 in	15.24 mm
Microchip Technology AT28C64B-15TI	Surface Mount	4.5 V	5.5 V	64 Kbit	EEPROM	28-TSSOP	0.465 "	11.8 mm	Parallel	Non-Volatile	8 K	EEPROM	28-TSOP	10 ms	150 ns	-40 °C	85 °C
Microchip Technology AT28C64B-15PC	Through Hole	4.5 V	5.5 V	64 Kbit	EEPROM	28-DIP			Parallel	Non-Volatile	8 K	EEPROM	28-PDIP	10 ms	150 ns			0.6 in	15.24 mm
Microchip Technology AT28C64-15PC	Through Hole	4.5 V	5.5 V	64 Kbit	EEPROM	28-DIP			Parallel	Non-Volatile	8 K	EEPROM	28-PDIP	1 ms	150 ns			0.6 in	15.24 mm
Microchip Technology AT28C64-15TC	Surface Mount	4.5 V	5.5 V	64 Kbit	EEPROM	28-TSSOP	0.465 "	11.8 mm	Parallel	Non-Volatile	8 K	EEPROM	28-TSOP	1 ms	150 ns
Microchip Technology AT28C64X-15SC	Surface Mount	4.5 V	5.5 V	64 Kbit	EEPROM	28-SOIC	0.295 in	7.5 mm	Parallel	Non-Volatile	8 K	EEPROM	28-SOIC	1 ms	150 ns
Microchip Technology AT28C64B-15JC	Surface Mount	4.5 V	5.5 V	64 Kbit	EEPROM	32-LCC (J-Lead)			Parallel	Non-Volatile	8 K	EEPROM	32-PLCC	10 ms	150 ns					11.43	13.97
Microchip Technology AT28C64E-12PC	Through Hole	4.5 V	5.5 V	64 Kbit	EEPROM	28-DIP			Parallel	Non-Volatile	8 K	EEPROM	28-PDIP	200 µs	120 ns			0.6 in	15.24 mm
Microchip Technology AT28C64B-15JU-235	Surface Mount	4.5 V	5.5 V	64 Kbit	EEPROM	32-LCC (J-Lead)			Parallel	Non-Volatile	8 K	EEPROM	32-PLCC	10 ms	150 ns	-40 °C	85 °C			13.97	11.43

Catalog

5V 64Kbit (8Kbit x 8) Parallel EEPROM with Software Data Protection

Key Features

• + 8 Kbits x 8 (64 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 100 µA (Max)

• + Hardware Protection

• + Software Data Protect

• + More than 100,000 erase/write cycles

• + Data retention > 10 years

• + Temperature Ranges

• + Standard Temperature Range: -40°C to 85°C

• + Available in Green (Pb/Halide-free) Packaging Only

• + 32-lead, Plastic J-leaded Chip Carrier (PLCC)

• + 28-lead, 0.600" Wide, Plastic Dual Inline Package (PDIP)

• + 28-lead, 0.300" Wide, Plastic Gull Wing Small Outline (SOIC)

• + 28-lead, Plastic Thin Small Outline Package (TSOP)

Description

The Microchip AT28C64B is a high-performance 64Kbit Parallel EEPROM offering access times to 150ns with power dissipation of 220mW. Deselected, CMOS standby current is less than 100µA. 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. Optional Software Data Protection mechanism guards against inadvertent writes; and an extra 64 bytes of EEPROM enables device identification or tracking.