參數(shù)資料
型號: MP80C51C-20D
廠商: TEMIC SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PDIP40
文件頁數(shù): 107/170頁
文件大小: 4133K
代理商: MP80C51C-20D
41
ATtiny4/5/9/10 [DATASHEET]
8127F–AVR–02/2013
10.2
Ports as General Digital I/O
The ports are bi-directional I/O ports with optional internal pull-ups. Figure 10-2 shows a functional description of
one I/O-port pin, here generically called Pxn.
Figure 10-2. General Digital I/O
Note:
1. WEx, WRx, WPx, WDx, REx, RRx, RPx, and RDx are common to all pins within the same port. clk
I/O, and SLEEP
are common to all ports.
10.2.1
Configuring the Pin
Each port pin consists of four register bits: DDxn, PORTxn, PUExn, and PINxn. As shown in “Register Description”
on page 50, the DDxn bits are accessed at the DDRx I/O address, the PORTxn bits at the PORTx I/O address, the
PUExn bits at the PUEx I/O address, and the PINxn bits at the PINx I/O address.
The DDxn bit in the DDRx Register selects the direction of this pin. If DDxn is written logic one, Pxn is configured
as an output pin. If DDxn is written logic zero, Pxn is configured as an input pin.
clk
RPx
RRx
RDx
WDx
WEx
SYNCHRONIZER
WDx:
WRITE DDRx
WRx:
WRITE PORTx
RRx:
READ PORTx REGISTER
RPx:
READ PORTx PIN
clk
I/O:
I/O CLOCK
RDx:
READ DDRx
WEx:
WRITE PUEx
REx:
READ PUEx
D
L
Q
REx
RESET
Q
D
Q
QD
CLR
PORTxn
Q
QD
CLR
DDxn
PINxn
D
A
TA
BUS
SLEEP
SLEEP:
SLEEP CONTROL
Pxn
I/O
WPx
RESET
Q
QD
CLR
PUExn
0
1
WRx
WPx:
WRITE PINx REGISTER
相關(guān)PDF資料
PDF描述
MS80C51T-16R 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQCC44
MF280C31-12R 8-BIT, 12 MHz, MICROCONTROLLER, PQFP44
MV80C51-16D 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP44
MP80C51-36D 8-BIT, MROM, 36 MHz, MICROCONTROLLER, PDIP40
MV80C51T-12R 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP44
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MP81 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BRIDGE RECTIFIERS
MP810 制造商:GOOD-ARK 制造商全稱:GOOD-ARK Electronics 功能描述:SILICON BRIDGE RECTIFIERS
MP-810 制造商:JAMECO BENCHPRO 功能描述:4-Piece Plier/Cutter/Screwdrivers Set
MP8100 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:Precision High-Side Current-Sense Amplifier
MP8100DS 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:Precision High-Side Current-Sense Amplifier