MSM514256C Datasheet, PDF (1/17 Pages) OKI electronic componets – 262,144-Word x 4-Bit DYNAMIC RAM : FAST PAGE MODE TYPE

E2G0010-17-41
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MSM514256C/CL
This ve_Mrs_Sio_Mn₅: ₁J₄a₂n₅. ₆1_C99_/8_CL
Previous version: May 1997
262,144-Word ¥ 4-Bit DYNAMIC RAM : FAST PAGE MODE TYPE
DESCRIPTION
The MSM514256C/CL is a 262,144-word ¥ 4-bit dynamic RAM fabricated in Oki's silicon-gate CMOS
technology. The MSM514256C/CL achieves high integration, high-speed operation, and low-power
consumption because Oki manufactures the device in a quadruple-layer polysilicon/single-layer
metal CMOS process. The MSM514256C/CL is available in a 20-pin plastic DIP, 26/20-pin plastic
SOJ, or 20-pin plastic ZIP. The MSM514256CL (the low-power version) is specially designed for
lower-power applications.
FEATURES
• 262,144-word ¥ 4-bit configuration
• Single 5 V power supply, ±10% tolerance
• Input : TTL compatible, low input capacitance
• Output : TTL compatible, 3-state
• Refresh : 512 cycles/8 ms, 512 cycles/64 ms (L-version)
• Fast page mode, read modify write capability
• CAS before RAS refresh, hidden refresh, RAS-only refresh capability
• Package options:
20-pin 300 mil plastic DIP
(DIP20-P-300-2.54-W1) (Product : MSM514256C/CL-xxRS)
26/20-pin 300 mil plastic SOJ (SOJ26/20-P-300-1.27) (Product : MSM514256C/CL-xxJS)
20-pin 400 mil plastic ZIP
(ZIP20-P-400-1.27) (Product : MSM514256C/CL-xxZS)
xx indicates speed rank.
PRODUCT FAMILY
Family
MSM514256C/CL-45
MSM514256C/CL-50
MSM514256C/CL-60
MSM514256C/CL-70
Access Time (Max.) Cycle Time
Power Dissipation
t_RAC t_AA t_CAC t_OEA
(Min.)
Operating (Max.) Standby (Max.)
45 ns 24 ns 14 ns 14 ns 90 ns
468 mW
50 ns 26 ns 14 ns 14 ns 100 ns
446 mW
5.5 mW/
60 ns 30 ns 15 ns 15 ns 120 ns
385 mW
1.1 mW (L-version)
70 ns 35 ns 20 ns 20 ns 130 ns
330 mW
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