参数资料
型号: MC68HC705P6ADW
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封装: SOIC-28
文件页数: 53/130页
文件大小: 1541K
代理商: MC68HC705P6ADW
Memory
Input/Output and Control Registers
MC68HC705P6A — Rev. 2.0
Advance Information
MOTOROLA
Memory
29
2.5 Input/Output and Control Registers
Figure 2-2 and Figure 2-3 briefly describe the I/O and control registers
at locations $0000–$001F. Reading unimplemented bits will return
unknown states, and writing unimplemented bits will be ignored.
PORT A DATA REGISTER
$0000
PORT B DATA REGISTER
$0001
PORT C DATA REGISTER
$0002
PORT D DATA REGISTER
$0003
PORT A DATA DIRECTION REGISTER
$0004
PORT B DATA DIRECTION REGISTER
$0005
PORT C DATA DIRECTION REGISTER
$0006
PORT D DATA DIRECTION REGISTER
$0007
UNIMPLEMENTED
$0008
UMIMPLEMENTED
$0009
SIOP CONTROL REGISTER
$000A
SIOP STATUS REGISTER
$000B
SIOP DATA REGISTER
$000C
RESERVED
$000D
UNIMPLEMENTED
$000E
UNIMPLEMENTED
$000F
UNIMPLEMENTED
$0010
UNIMPLEMENTED
$0011
TIMER CONTROL REGISTER
$0012
TIMER STATUS REGISTER
$0013
INPUT CAPTURE MSB
$0015
INPUT CAPTURE LSB
$0016
OUTPUT COMPARE MSB
$0017
OUTPUT COMPARE LSB
$0017
TIMER MSB
$0018
TIMER LSB
$0019
ALTERNATE COUNTER MSB
$001A
ALTERNATE COUNTER LSB
$001B
EPROM PROGRAMMING REGISTER
$001C
A/D CONVERTER DATA REGISTER
$001D
A/D CONVERTER CONTROL AND STATUS REGISTER
$001E
RESERVED
$001F
Figure 2-2. MC68HC705P6A I/O and Control
Registers Memory Map
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