參數(shù)資料
型號: MC68HC705PD6
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 69/165頁
文件大?。?/td> 841K
代理商: MC68HC705PD6
GENERAL RELEASE SPECIFICATION
July 7, 1997
MOTOROLA
MC68HC05PD6
A-2
REV 1.1
OSCR – OSC feedback resistor
1 =
Internal feedback resistor connected between OSC1 and OSC2.
0 =
Internal feedback resistor not connected.
XOSCR – XOSC feedback resistor
1 =
Internal feedback resistor connected between XOSC1 and XOSC2.
0 =
Internal feedback resistor not connected.
Figure A-1. MC68HC705PD6 Memory Map
A.4
BOOTLOADER MODE
Bootloader mode is entered upon the rising edge of RESET if the VPP pin is at
VTST, PC6 at logic one, and PC7 at logic zero. The Bootloader program is masked
in the ROM area from $FE00 to $FFDF. This program handles copying of user
code from an external EPROM into the on-chip EPROM. The bootload function
has to be done from an external EPROM. The bootloader performs one
programming pass at 1ms per byte then does a verify pass.
$0000
$003F
0000
0063
I/O REGISTERS
I/O
64 BYTES
$0000
$003F
$0040
$00C0
$00FF
$023F
$0240
$0FFF
$1000
$4FFF
$5000
$FDFF
$FE00
$FFDF
$FFE0
$FFEF
$FFF0
$FFFF
RAM
STACK 64 BYTES
512 BYTES
UNUSED
USER EPROM
UNUSED
BOOTSTRAP ROM
BOOTSTRAP VECTORS
USER VECTORS
DUAL MAPPED
64 bytes
0
63
64
191
192
255
256
575
576
4095
4096
20479
20480
65023
65024
65503
65504
65519
65520
65535
16K BYTES
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