參數(shù)資料
型號: MC68HC05JB3DW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 60/148頁
文件大?。?/td> 1600K
代理商: MC68HC05JB3DW
November 5, 1998
GENERAL RELEASE SPECIFICATION
MC68HC05JB3
GENERAL DESCRIPTION
MOTOROLA
REV 1
1-7
PA0 to PA3 has external interrupt function (mask option) with schmitt trigger input
circuit, and PA4 to PA7 has 8mA current sink capability.
Port A can also be congured as the optical interface.
1.4.8 PB0-PB2, PB3-PB7
These seven I/O lines comprise Port B. The state of any pin is software program-
mable and is congured as an input during power-on or reset.
PB1 and PB2 are open-drain I/O lines with pull-up devices. PB0 (shared with
TCAP) is a push-pull I/O line with pull-down device.
PB1 and PB2 are also slow transition outputs, each has 25mA current sink capa-
bility at VOL =0.5V.
PB4-PB7 I/O lines are push-pull pins with pull-down devices, and are only avail-
able in the 28-pin package.
1.4.9 PC0-PC3
These four I/O lines comprise Port C. The state of any pin is software programma-
ble and all Port C lines are congured as inputs during power-on or reset.
PC0 to PC3 are push-pull pins with pull-down devices. PC0 is also shared with the
OCMP pin from the output compare function of the 16-bit timer.
Port C is only available in the 28-pin package.
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