參數(shù)資料
型號(hào): MB90457PMT
元件分類(lèi): 微控制器/微處理器
英文描述: 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP48
封裝: 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁(yè)數(shù): 19/78頁(yè)
文件大?。?/td> 680K
代理商: MB90457PMT
MB90455 Series
26
Port 4 pins block diagram
Port 4 registers
Port 4 registers include port 4 data register (PDR4) and port 4 direction register (DDR4).
The bits configuring the register correspond to port 4 pins on a one-to-one basis.
Relation between port 4 registers and pins
Port name
Bits of register and corresponding pins
Port 4
PDR4, DDR4
bit4
bit3
bit2
bit1
bit0
Corresponding pins
P44
P43
P42
P41
P40
Pch
Nch
Peripheral
function input
Peripheral
function output
Port data register (PDR)
PDR read
Output latch
PDR write
Peripheral function
output permission
Pin
Port direction register (DDR)
Direction
latch
DDR write
DDR read
Standby control (SPL=1)
Internal
data
bus
Standby control : Control among Stop mode (SPL=1), Time-base timer mode (SPL=1), and clock mode
(SPL=1).
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