HM658512A

Features:

` Single 5 V (±10%)
` High speed
- Access time CE access time: 70/80/100 ns (max)
- Cycle time Random read/write cycle time: 115/130/160 ns (min)
` Low power
- Active: 250 mW (typ)
- Standby: 200 W (typ)
` Directly TTL compatible All inputs and outputs
` Simple address configuration Non multiplexed address
` Refresh cycle
- 2048 refresh cycles: 32 ms
`  Easy refresh functions
    Address refresh
    Automatic refresh
    Self refresh


Pinout




Specifications

Parameter	Symbol	Value	Unit	Note
Terminal voltage with respect to VSS	VT	1.0 to+7.0	v	1
Power dissipation	PT	1.0	w
Operating temperature	Topr	0 to +70	°C
Storage temperature	Tstg	55 to +125	°C
Storage temperature under bias	Tbias	10 to +85	v

Description

The Hitachi HM658512A is a CMOS pseudo static RAM organized 512-kword ´ 8-bit. It realizes higher density, higher performance and low power consumption by employing 0.8 m Hi-CMOS process technology.

It offers low power data retention by self refresh mode. It also offers easy non multiplexed address interface and easy refresh functions. HM658512A is suitable for handy systems which work with battery back-up systems.

The HM658512A  is packaged in a small 525-mil SOP (460-mil body SOP) or a 8 ´ 20 mm TSOP with thickness of 1.2 mm, or a 600-mil plastic DIP. High density custom cards made of Tape Carrier Packages are also available.