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參數資料
| 型號： | MSM81C55-5GS-2K |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 22 I/O, PIA-GENERAL PURPOSE, PQFP44 |
| 封裝： | 0.80 MM PITCH, PLASTIC, QFP-44 |
| 文件頁數： | 2/19頁 |
| 文件大小： | 147K |
| 代理商： | MSM81C55-5GS-2K |
10/19
Semiconductor
MSM81C55-5RS/GS/JS
OPERATION
Description
The MSM81C55-5 has three functions as described below.
2K-bit static RAM (256 words 8 bits)
Two 8-bit I/O ports (PA and PB) and a 6-bit I/O port (PC)
14-bit timer counter
The internal register is shown in the figure below, and the I/O addresses are described in the
table below.
8 Bit Internal Data Bus
Command
Status
PC
6 Bit
PB
8 Bit
PA
8 Bit
Timer
MSB
Timer
LSB
Timer Mode
A7
I/O Address
Selecting Register
Internal command/status register
Universal I/O port A (PA)
Universal I/O port B (PB)
I/O port C (PC)
Timer count lower position 8 bits (LSB)
Timer count upper position 6 bits and timer mode
2 bits (MSB)
A6
A5
A4
A3
A2
0
1
A1
0
1
0
A0
0
1
0
1
0
1
: Don't care.
相關PDF資料 |
PDF描述 |
|---|---|
| MSM82C51A-2GS-VK | 1 CHANNEL(S), 64K bps, SERIAL COMM CONTROLLER, PDSO32 |
| MSM82C51A-2JS | 1 CHANNEL(S), 64K bps, SERIAL COMM CONTROLLER, PQCC28 |
| MSM82C51A-2GS-K | 1 CHANNEL(S), 64K bps, SERIAL COMM CONTROLLER, PDSO32 |
| MSM82C53-2GS-K | 3 TIMER(S), PROGRAMMABLE TIMER, PDSO32 |
| MSM82C53-2RS | 3 TIMER(S), PROGRAMMABLE TIMER, PDIP24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MSM81C55-5JS | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:2048-Bit CMOS STATIC RAM WITH I/O PORTS AND TIMER |
| MSM81C55-5RS | 制造商:ROHM Semiconductor 功能描述: 制造商:OK International 功能描述: |
| 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 |
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