參數(shù)資料
型號: MC68HC05K3DWR2
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 MHz, MICROCONTROLLER, PDSO16
封裝: SOIC-16
文件頁數(shù): 99/132頁
文件大?。?/td> 1188K
代理商: MC68HC05K3DWR2
Parallel Input/Output (I/O)
I/O Port Programming
MC68HC05K3 — Revision 4.0
Technical Data
MOTOROLA
Parallel Input/Output (I/O)
69
Table 7-2. PB0 Pin Functions
Software
Prog.
Pulldown
Mask
Option*
PDIB0
DDRB0
I/O Pin
Mode
Access to PDRB
at $0011
Access to DDRB
at $0005
Access to Data
Register at $0001
Read
Write
Read/Write
Read
Write
1
X
0
In, Hi-Z
U
PDIB0
DDRB0
I/O pin
X
1
X
1
Out
U
PDIB0
DDRB0
PB0
0
In, pulldown
U
PDIB0
DDRB0
I/O pin
X
0
1
Out
U
PDIB0
DDRB0
PB0
0
1
0
In, Hi-Z
U
PDIB0
DDRB0
I/O pin
X
0
1
Out
U
PDIB0
DDRB0
PB0
Notes:
X is don’t care state
U is an undefined state
*1 = pulldowns disabled, 0 = pulldowns enabled
Table 7-3. PB1/OSC3 Pin Functions
Mask
Option
(3-Pin)
Software
Prog.
Pulldown
Mask
Option*
PDIB1
DDRB1
I/O Pin
Mode
Access to
PDRB at $0011
Access to
DDRB at
$0005
Access to
Data Register
at $0001
Read
Write
Read/Write
Read
Write
0
1
0
In, Hi-Z
U
PDIB1
DDRB1
I/O pin
X
0
1
Out
U
PDIB1
DDRB1
PB1
00
0
In,
Pulldown
U
PDIB1
DDRB1
I/O pin
X
0
1
Out
U
PDIB1
DDRB1
PB1
0
In, Hi-Z
U
PDIB1
DDRB1
I/O pin
X
0
1
Out
U
PDIB1
DDRB1
PB1
1X
X
RC
OSCOUT
U
PDIB1
DDRB1
PB1
Notes:
X is don’t care state
U is an undefined state
*1 = pulldowns disabled, 0 = pulldowns enabled
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