MSM54V25632A Datasheet, PDF (1/67 Pages) OKI electronic componets – 131,072-Word x 32-Bit x 2-Bank Synchronous Graphics RAM

E2L0068-19-61
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Previous version: Sep. 1998
MSM54V25632A
131,072-Word ¥ 32-Bit ¥ 2-Bank Synchronous Graphics RAM
DESCRIPTION
The MSM54V25632A is a synchronous graphics random access memory organized as 128 K words
¥ 32 bits ¥ 2 banks.
This device can operate up to 100 MHz by using synchronous interface. In addition, it has 8-column
Block Write function and Write per bit function which improves performance in graphics
systems.
FEATURES
• 131,072 words ¥ 32 bits ¥ 2 banks memory
• Single 3.3 V ±0.3 V power supply
• LVTTL compatible inputs and outputs
• All input signals are latched at rising edge of system clock
• Auto precharge and controlled precharge
• Internal pipelined operation: column address can be changed every clock cycle
• Dual internal banks controlled by A9 (Bank Address: BA)
• Independent byte operation via DQM0 to DQM3
• 8-column Block Write function
• Persistent write per bit function
• Programmable burst sequence (Sequential/Interleave)
• Programmable burst length (1, 2, 4, 8 and full page)
• Programmable CAS latency (1, 2 and 3)
• Burst stop function (full-page burst)
• Power Down operation and Clock Suspend operation
• Auto refresh and self refresh capability
• 1,024 refresh cycles/16 ms
• Package:
100-pin plastic QFP (QFP100-P-1420-0.65-BK4) (Product : MSM54V25632A-xxAGBK4)
xx indicates speed rank.
PRODUCT FAMILY
Family
MSM54V25632A-10
MSM54V25632A-12
Clock Frequency
MHz (Max.)
100
83
Package
100-pin Plastic QFP (14 ¥ 20 mm)
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