Product Overview
64Kbit 8K x 8 CMOS static RAM with battery backup capability
Condition
Unused, NOS – New Old Stock. Excellent condition with nothing out of the ordinary noted. Visual inspection OK. Sourced from an electronics distributor that was consolidating inventory.
Ships same business day. Hard-to-find parts since 1999. Fair prices, real help.
Product Overview
Hitachi HM6264LP-12 is a 64Kbit CMOS static RAM organized as 8,192 words by 8 bits in a 28-pin plastic DIP package. The -12 speed grade provides a 120ns access time, making it suitable for classic 8-bit and early 16-bit microprocessor systems. The "LP" low power designation is optimized for battery-backed memory designs, with very low standby current and data retention down to 2.0V. Built on Hi-CMOS technology, it delivers reliable asynchronous SRAM performance without the refresh requirements of DRAM.
Key Features
- Brand: Hitachi
- Model: HM6264LP-12
- Memory organization: 8K x 8 (64 Kilobits total)
- Access time (tAA): 120ns
- Technology: Hi-CMOS static RAM
- Operating voltage: 5V ±10%
- Active current: 30mA to 50mA typical
- Standby current: as low as 1µA to 2µA typical, 100µA max in deep standby
- Data retention voltage: down to 2.0V
- Package: 28-pin plastic DIP, JEDEC standard pinout
- Commercial temperature range: 0°C to +70°C
Applications
- Battery-backed RAM in vintage computers and controllers
- Memory expansion for Z80, 6502, 8051, and similar systems
- Industrial PLC memory replacement
- Musical instruments and synthesizer memory repair
- Embedded systems requiring low standby current
- Direct replacement for compatible 6264-series 8K SRAM devices
Frequently Asked Questions
Is this compatible with other 6264 SRAM chips?
Yes. It follows the industry-standard 28-pin 6264 pinout and is typically pin-compatible with other 8K x 8 SRAM devices in the same family.
What does the "LP" suffix mean?
"LP" indicates the low power version, designed for reduced standby current and battery-backed data retention applications.
What is the access speed?
The -12 suffix denotes a 120ns maximum access time from address valid to data output.
Can it retain data on a coin cell battery?
Yes. With data retention down to 2.0V and very low standby current, it is well suited for 3V lithium coin cell backup circuits when properly designed.
Is this DRAM?
No. It is static RAM (SRAM), which does not require refresh cycles and maintains data as long as power is supplied.
An 8K SRAM that kept countless 8-bit systems alive. When a board depends on stable battery-backed memory, this is the part that quietly holds the data in place.
