參數(shù)資料
型號(hào): MC68HC05X4CDWR2
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PDSO28
封裝: PLASTIC, SOIC-28
文件頁數(shù): 35/168頁
文件大?。?/td> 656K
代理商: MC68HC05X4CDWR2
MC68HC05X4 Rev 1.0
MOTOROLA
Modes of Operation and Pin Descriptions
13
Modes of Operation and Pin Descriptions
General Description
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Single chip mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Bootloader modes for the MC68HC05X4 and MC68HC705X4 . . . . . 14
Bootloader Mode for the MC68HC05X4 . . . . . . . . . . . . . . . . . . . . . 14
Bootloader data format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Bootloader mode for the MC68HC705X4 . . . . . . . . . . . . . . . . . . . . 18
Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
VDD and VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
MDS/TCAP(VPP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
OSC1/OSC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
PA0–PA7/PB0–PB7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
VDDH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
VSS1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
RX0/RX1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
TX0/TX1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Introduction
The MC68HC05X4 has two modes of operation: single chip and
bootloader. Table 1 shows the conditions required to enter each mode
on the rising edge of RESET.
Table 1. Operating mode entry conditions
MDS/TCAP (
VPP)
PB1
PB7
Mode
VSS to VDD
x
Single chip
2 VDD
VPP (EPROM)
VDD
VSS
Bootloader
1-modes
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