參數(shù)資料
型號: MC68HC05PD6
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, TQFP-80
文件頁數(shù): 76/165頁
文件大小: 841K
代理商: MC68HC05PD6
GENERAL RELEASE SPECIFICATION
July 7, 1997
MOTOROLA
GENERAL DESCRIPTION
MC68HC05PD6
1-6
REV 1.1
Figure 1-4. XOSC Connections
1.3.4 RESET
This active low input-only pin is used to reset the MCU to a known start-up state.
The RESET pin contains an internal Schmitt trigger as part of its input to improve
noise immunity. See Section 5 for more details.
1.3.5 VPP
This pin is used to supply high voltage needed for programming the user EPROM
on the MC68HC705PD6 device. In normal operation, this pin should be
connected to VDD.
1.3.6 PA0-PA7
These eight I/O lines comprise Port A. The state of any pin is software
programmable and all Port A lines are congured as inputs during Reset. See
Section 7 for a detailed description of I/O programming.
1.3.7 PB0/KWI0-PB7/KWI7
These eight pins are either general purpose I/O pins port B or Key Wake-up
interrupt input. See Section 7 for a detailed description of I/O programming and
Section 4 for a detailed description of Interrupts.
1.3.8 PC0/RDI, PC1/TDO
These two pins are either general purpose I/O pins port C or the receive data
Rf
Rd
XOSC1
XOSC2
MCU
MASK
OPTION
ON CHIP
OFF CHIP
Rf
Rd
XOSC1
XOSC2
MCU
MASK
OPTION
unconnected
External Clock
(b) External
Clock Source
Connection
(a) Crystal or
Ceramic Resonator
Connections
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