參數(shù)資料
| 型號： | CMQ82C55AZ |
| 廠商： | Intersil |
| 文件頁數(shù)： | 20/26頁 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER 24B 44MQFP |
| 標準包裝： | 960 |
| 接口： | 可編程 |
| 輸入/輸出數(shù)： | 24 |
| 中斷輸出： | 無 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 44-QFP |
| 供應商設備封裝： | 44-MQFP（10x10） |
| 包裝： | 帶卷 (TR) |
3
FN6140.2
June 15, 2006
Functional Diagram
Pin Description
SYMBOL
TYPE
DESCRIPTION
VCC
VCC: The +5V power supply pin. A 0.1F capacitor between VCC and GND is recommended for decoupling.
GND
GROUND
D0-D7
I/O
DATA BUS: The Data Bus lines are bidirectional three-state pins connected to the system data bus.
RESET
I
RESET: A high on this input clears the control register and all ports (A, B, C) are set to the input mode.
CS
I
CHIP SELECT: Chip select is an active low input used to enable the 82C55A onto the Data Bus for CPU
communications.
RD
I
READ: Read is an active low input control signal used by the CPU to read status information or data via the data bus.
WR
I
WRITE: Write is an active low input control signal used by the CPU to load control words and data into the 82C55A.
A0-A1
I
ADDRESS: These input signals, in conjunction with the RD and WR inputs, control the selection of one of the three
ports or the control word register. A0 and A1 are normally connected to the least significant bits of the Address Bus
A0, A1.
PA0-PA7
I/O
PORT A: 8-bit input and output port.
PB0-PB7
I/O
PORT B: 8-bit input and output port.
PC0-PC7
I/O
PORT C: 8-bit input and output port.
GROUP A
PORT A
(8)
GROUP A
PORT C
UPPER
(4)
GROUP B
PORT C
LOWER
(4)
GROUP B
PORT B
(8)
GROUP B
CONTROL
GROUP A
CONTROL
DATA BUS
BUFFER
READ
WRITE
CONTROL
LOGIC
RD
WR
A1
A0
RESET
CS
D7-D0
POWER
SUPPLIES
+5V
GND
BIDIRECTIONAL
DATA BUS
I/O
PA7-PA0
I/O
PC7-PC4
I/O
PC3-PC0
I/O
PB7-PB0
8-BIT
INTERNAL
DATA BUS
FIGURE 1. FUNCTIONAL DIAGRAM
MS82C55A, MQ82C55A, MP82C55A
相關PDF資料 |
PDF描述 |
|---|---|
| CMS82C55AZ96 | IC I/O EXPANDER 24B 44PLCC |
| CMS82C55AZ | IC I/O EXPANDER 24B 44PLCC |
| CS82C55A-5Z96 | IC I/O EXPANDER 24B 44PLCC |
| MCP2200-I/SO | IC USB TO UART 20SOIC |
| ATMEGA48-15MZ | MCU AVR 4K FLASH 15MHZ 32-QFN |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CMQ82C55AZ96 | 功能描述:外圍驅動器與原件 - PCI PERI PRG-I/O 5V 8MHZ COMOKIPLACEMENT RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| CMR | 制造商:CRYDOM 制造商全稱:Crydom Inc., 功能描述:Crydoms CMR Series |
| CMR01G | 功能描述:LED 電路板指示器 HI EFF GREEN DIFF RIGHT ANGLE RoHS:否 制造商:Lumex LED 大小:3 mm 照明顏色:Green 波長:565 nm 光強度:30 mcd 安裝類型:SMD/SMT 顯示角:60 deg 封裝:Reel |
| CMR01R | 功能描述:LED 電路板指示器 HI EFF RED DIFFUSED RIGHT ANGLE RoHS:否 制造商:Lumex LED 大小:3 mm 照明顏色:Green 波長:565 nm 光強度:30 mcd 安裝類型:SMD/SMT 顯示角:60 deg 封裝:Reel |
| CMR01Y | 功能描述:LED 電路板指示器 YELLOW DIFFUSED RIGHT ANGLE RoHS:否 制造商:Lumex LED 大小:3 mm 照明顏色:Green 波長:565 nm 光強度:30 mcd 安裝類型:SMD/SMT 顯示角:60 deg 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。