DRAM / FAST PAGE MODE TYPE
Description
E2L0028-17-Y1 ¡ Semiconductor
¡ Semiconductor MSM514212
5,048-Word ¥ 8-Bit Line Memory
This version: Jan.
1998 MSM514212 Previous version: Dec.
1996
DESCRIPTION
The OKI MSM514212 is a high-performance serial-line memory.
It is designed for use in NTSC, PAL or SECAM Video line buffer applications such as digital comb filters in TVs/VTRs, IDTV (Improved Definition Television), time based correction, or other applications that use serial data including facsimiles, digital copy machines, etc.
High-reliability and low-power consumption are accomplished by using CMOS dynamic memory cells.
It has separate 8-bit-wide serial input and serial output ports that use independent data clocks to support asynchronous read and write operations.
Different clock rates are also supported that allow alternate data rates between input and output data streams.
A wide range of variable delay bits (40 bits to 5,048 bits) are supported offering greater design flexibility.
Internal logic keeps all asynchronous accesses from being delayed by arbitrating the data storage, and data retrieval requirements to provide maximum performance at all times.
All input and output signals are TTL compatible, and the MSM514212 is packaged in a standard 400 mil 28-pin plastic ZIP.
FEATURES
• Single power supply: 5 V ± 10% • Capacity: 5,048 words ¥ 8 bits • Access: I/O asynchronous • Access time: 28 ns (min.
) • Cycle time : 28 ns (min.
) • Delay bits: Variable (40 to 5,048) • Low current consumption: 30 mA (max.
) • Operating voltage range: 4.
5 V to 5.
5 V • Operating temperature range : 0°C to 70°C • Package : 28-pin 400 mil plastic ZIP (ZIP28-P-400-1.
27)
(Product : MSM514212-xxZS) xx indicates speed rank.
PRODUCT FAMILY
Family MSM514212-28 MSM514212-34 MSM514212-50 Cycle Time (Min.
) 28 ns 34 ns 50 ns Access Time (Min.
) 28 ns 34 ns 40 ns Power Dissipation (Max.
) 230 mA 200 mA 170 mA
1/15
¡ Semiconductor
MSM514212
PIN CONFIGURATION (TOP VIEW)
VSS DIN3 DIN1 VCC DOUT1
1 3 5 7 9
2 4 6 8
VSS DIN2 DIN0 D...
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