AT28HC64BF Series

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

Catalog

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

Part	Voltage - Supply [Min]	Voltage - Supply [Max]	Technology	Memory Format	Access Time	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Memory Organization	Supplier Device Package	Package / Case	Package / Case	Package / Case	Memory Size	Memory Interface	Memory Type	Write Cycle Time - Word, Page	Supplier Device Package [y]	Supplier Device Package [x]	Package / Case [x]	Package / Case [y]
Microchip Technology AT28HC64BF-12PU	4.5 V	5.5 V	EEPROM	EEPROM	120 ns	Through Hole	-40 °C	85 °C	8 K	28-PDIP	28-DIP	0.6 in	15.24 mm	64 Kbit	Parallel	Non-Volatile	10 ms
Microchip Technology AT28HC64B-12JI	4.5 V	5.5 V	EEPROM	EEPROM	120 ns	Surface Mount	-40 °C	85 °C	8 K	32-PLCC	32-LCC (J-Lead)			64 Kbit	Parallel	Non-Volatile	10 ms	11.43	13.97
Microchip Technology AT28HC64BF-90SU	4.5 V	5.5 V	EEPROM	EEPROM	90 ns	Surface Mount	-40 °C	85 °C	8 K	28-SOIC	28-SOIC			64 Kbit	Parallel	Non-Volatile	10 ms			0.295 in	7.5 mm
Microchip Technology AT28HC64B-70PI	4.5 V	5.5 V	EEPROM	EEPROM	70 ns	Through Hole	-40 °C	85 °C	8 K	28-PDIP	28-DIP	0.6 in	15.24 mm	64 Kbit	Parallel	Non-Volatile	10 ms
Microchip Technology AT28HC64B-70PC	4.5 V	5.5 V	EEPROM	EEPROM	70 ns	Through Hole			8 K	28-PDIP	28-DIP	0.6 in	15.24 mm	64 Kbit	Parallel	Non-Volatile	10 ms
Microchip Technology AT28HC64B-90PC	4.5 V	5.5 V	EEPROM	EEPROM	90 ns	Through Hole			8 K	28-PDIP	28-DIP	0.6 in	15.24 mm	64 Kbit	Parallel	Non-Volatile	10 ms
Microchip Technology AT28HC64BF-12TU	4.5 V	5.5 V	EEPROM	EEPROM	120 ns	Surface Mount	-40 °C	85 °C	8 K	28-TSOP	28-TSSOP			64 Kbit	Parallel	Non-Volatile	10 ms			0.465 "	11.8 mm
Microchip Technology AT28HC64B-90JC	4.5 V	5.5 V	EEPROM	EEPROM	90 ns	Surface Mount			8 K	32-PLCC	32-LCC (J-Lead)			64 Kbit	Parallel	Non-Volatile	10 ms	11.43	13.97
Microchip Technology AT28HC64B-70TU	4.5 V	5.5 V	EEPROM	EEPROM	70 ns	Surface Mount	-40 °C	85 °C	8 K	28-TSOP	28-TSSOP			64 Kbit	Parallel	Non-Volatile	10 ms			0.465 "	11.8 mm
Microchip Technology AT28HC64B-12JU	4.5 V	5.5 V	EEPROM	EEPROM	120 ns	Surface Mount	-40 °C	85 °C	8 K	32-PLCC	32-LCC (J-Lead)			64 Kbit	Parallel	Non-Volatile	10 ms	11.43	13.97

Catalog

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

Key Features

• + 8 Kbits x 8 (64 Kbit)

• + 5 V ±10% Supply

• + Parallel Interface

• + 70ns access time

• + Self-Timed Erase and Write Cycles (10 ms max)

• + Page Write and Byte Write

• + Data Polling for end of write detection

• + 2 ms Maximum Option see AT28HC64BF datasheet

• + Low Power Consumption

• + Read / Write current 40 mA (Max)

• + Standby current TTL 2 mA (Max), CMOS 100 µA (Max)

• + Write-Protection

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

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

Description

The Microchip AT28HC64BF is a high-performance 64Kbit Parallel EEPROM offering access times to 55ns 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.