參數(shù)資料
型號: MC68HC805K3DW
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, EEPROM, 2 MHz, MICROCONTROLLER, PDSO16
封裝: SOIC-16
文件頁數(shù): 38/119頁
文件大?。?/td> 496K
代理商: MC68HC805K3DW
General Release Specification
Functional Pin Description
MC68HC805K3 — Rev. 1.0
MOTOROLA
General Description
25
1.7.5 PA0 through PA7
These eight I/O lines comprise port A. The state of any pin is software
programmable and all port A lines are configured as inputs during
power-on or reset. The four upper-order I/O pins (PA4 through PA7) are
capable of sinking higher currents. The four lower-order I/O pins (PA0
through PA3) can be connected via an internal OR gate to the IRQ
interrupt function by a mask option register bit. All the port A pins can
have software programmable pulldown devices provided by another
mask option bit. See Section 7. Parallel Input/Output for more details
on the I/O ports.
1.7.6 PB0
The state of the PB0 pin is software programmable and is configured as
an input during power-on or reset. This pin can have a software
programmable pulldown device provided by a mask option register bit.
See Section 7. Parallel Input/Output for more details on the I/O ports.
1.7.7 PB1/OSC3
The state of the PB1/OSC3 pin is software programmable and is
configured as an input during power-on or reset except when the 3-pin
RC oscillator configuration is selected by a pair of mask option register
bits. This pin can have a software programmable pulldown device
provided by a mask option. See Section 7. Parallel Input/Output for
more details on the I/O ports.
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