HM6216255HI Datasheet, PDF (1/16 Pages) Hitachi Semiconductor – 4M high Speed SRAM (256-kword x 16-bit)

HM6216255HI Series
4M high Speed SRAM (256-kword × 16-bit)
ADE-203-1037A (Z)
Rev. 1.0
Apr. 15, 1999
Description
The HM6216255HI Series is a 4-Mbit high speed static RAM organized 256-k word × 16-bit. It has realized
high speed access time by employing CMOS process (4-transistor + 2-poly resistor memory cell) and high
speed circuit designing technology. It is most appropriate for the application which requires high speed, high
density memory and wide bit width configuration, such as cache and buffer memory in system. It is packaged
in 400-mil 44-pin plastic SOJ and 400-mil 44-pin plastic TSOPII.
Features
• Single 5.0 Vsupply : 5.0 V ± 10 %
• Access time: 12/15 ns (max)
• Completely static memory
 No clock or timing strobe required
• Equal access and cycle times
• Directly TTL compatible
 All inputs and outputs
• Operating current: 200/180 mA (max)
• TTL standby current: 60/50 mA (max)
• CMOS standby current: 5 mA (max)
• Center V_CC and V_SS type pinout
• Temperature range: –40 to 85°C