MSM514212 Datasheet, PDF (1/15 Pages) OKI electronic componets – 5,048-Word x 8-Bit Line Memory

E2L0028-17-Y1
¡ _¡ Semicond_Suc_etor_miconductor
MSM514212
5,048-Word ¥ 8-Bit Line Memory
This version_M: _SJa_Mn.₅1₁9₄9₂8₁₂
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