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參數(shù)資料
| 型號： | MSM81C55-5RS |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 2048-Bit CMOS STATIC RAM WITH I/O PORTS AND TIMER |
| 中文描述： | 2048位CMOS靜態(tài)RAM與I / O端口和定時(shí)器 |
| 文件頁數(shù)： | 1/19頁 |
| 文件大?。?/td> | 156K |
| 代理商： | MSM81C55-5RS |
1/19
Semiconductor
MSM81C55-5RS/GS/JS
MSM81C55-5RS/GS/JS
Previous version: Aug. 1996
GENERAL DESCRIPTION
The MSM81C55-5 has a 2k-bit static RAM (256 bytes) with parallel I/O ports and a timer. It uses
silicon gate CMOS technology and consumes a standby current of 100 micro ampere, maximum,
while the chip is not selected. Featureing a maximum access time of 400 ns, the MSM81C55-5
can be used in an MSM80C85AH system without using wait states. The parallel I/O consists
of two 8-bit ports and one 6-bit port (both general purpose).
The MSM81C55-5 also contains a 14-bit programmable counter/timer which may be used for
sequence-wave generation or terminal count-pulsing.
FEATURES
High speed and low power achieved with silicon gate CMOS technology
256 words x 8bits RAM
Single power supply, 3 to 6 V
Completely static operation
On-chip address latch
8-bit programmable I/O ports (port A and B)
TTL Compatible
RAM data hold characteristic at 2 V
6-bit programmable I/O port (port C)
14-bit programmable binary counter/timer
Multiplexed address/data bus
Direct interface with MSM80C85AH
40-pin Plastic DIP (DIP40-P-600-2.54): (Product name: MSM81C55-5RS)
44-pin Plastic QFJ (QFJ44-P-S650-1.27): (Product name: MSM81C55-5JS)
44-pin Plastic QFP (QFP44-P-910-0.80-2K): (Product name: MSM81C55-5GS-2K)
FUNCTIONAL BLOCK DIAGRAM
2048-Bit CMOS STATIC RAM WITH I/O PORTS AND TIMER
IO/
M
AD
0 - 7
CE
ALE
RD
WR
RESET
TIMER IN
TIMER OUT
Timer
256
￥
8
Static
RAM
A
B
C
8
8
6
Port A
Port B
Port C
PA
0 - 7
PB
0 - 7
PC
0 - 5
V
CC
(+5 V)
GND (0 V)
E2O0014-27-X2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MSM81C55-5 | 2k-bit Static RAM (256 bytes) With Parallel I/O Ports And A Timer(擴(kuò)展CPU的RAM、定時(shí)器和I/O口) |
| MSM82C37B-5GS | PROGRAMMABLE DMA CONTROLLER |
| MSM82C43 | INPUT/OUTPUT PORT EXPANDER |
| MSM82C51A-2GS | UNIVERSAL SYNCHRONOUS ASYNCHRONOUS RECEIVER TRANSMITTER |
| MSM82C51A-2JS | UNIVERSAL SYNCHRONOUS ASYNCHRONOUS RECEIVER TRANSMITTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM82C37B-5GS | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:PROGRAMMABLE DMA CONTROLLER |
| MSM82C37B-5JS | 制造商:OK International 功能描述:4 CHANNEL(S), 5 MHZ, DMA CONTROLLER, PQCC44 |
| MSM82C37B-5RS | 制造商:OK International 功能描述:4 CHANNEL(S), 5 MHz, DMA CONTROLLER, PDIP40 |
| MSM82C37B-5VJS | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:PROGRAMMABLE DMA CONTROLLER |
| MSM82C43 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:INPUT/OUTPUT PORT EXPANDER |
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