参数资料
型号: MB90F804-101PF-G
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100
文件页数: 18/92页
文件大小: 2250K
代理商: MB90F804-101PF-G
MB90800 Series
DS07-13733-5E
25
■ PERIPHERAL RESOURCES
1.
I/O port
The I/O ports function to output data from the CPU to I/O pins by setting their port data register (PDR) and send
signals input to I/O pins to the CPU. In addition, the port can randomly set the direction of the input/output of
the port in bit by the port direction register (DDR).
The MB90800 series has 68 (70 ports when the subclock is not used) input/output pins. Port0 to port8 (port0 to
port9 when product without the subclock is used) are input/output port.
(1) Port data register
* : R/W access to I/O ports is a bit different in behavior from R/W access to memory as follows
Input mode
When reading : Read the corresponding pin level.
When writing : Write into the latch for the output.
Output mode
When reading : Read the value of the data register latch.
When writing : Write into the corresponding pin.
- : Unused
PDR0
bit
Initial Value
Access
Address : 000000H
Indeterminate
R/W*
PDR1
bit
Address : 000001H
Indeterminate
R/W*
PDR2
bit
Address : 000002H
Indeterminate
R/W*
PDR3
bit
Address : 000003H
Indeterminate
R/W*
PDR4
bit
Address : 000004H
Indeterminate
R/W*
PDR5
bit
Address : 000005H
Indeterminate
R/W*
PDR6
bit
Address : 000006H
Indeterminate
R/W*
PDR7
bit
Address : 000007H
Indeterminate
R/W*
PDR8
bit
Address : 000008H
Indeterminate
R/W*
PDR9
bit
Address : 000009H
Indeterminate
R/W*
76
5
4
3
2
1
0
P06
P07
P05
P04
P03
P02
P01
P00
15
14
13
12
11
10
9
8
P16
P17
P15
P14
P13
P12
P11
P10
76
5
4
3
2
1
0
P26
P27
P25
P24
P23
P22
P21
P20
15
14
13
12
11
10
9
8
P36
P37
P35
P34
P33
P32
P31
P30
76
5
4
3
2
1
0
P46
P47
P45
P44
P43
P42
P41
P40
15
14
13
12
11
10
9
8
P56
P57
P55
P54
P53
P52
P51
P50
76
5
4
3
2
1
0
P66
P65
P64
P63
P62
P61
P60
P67
15
14
13
12
11
10
9
8
P76
P75
P74
P73
P72
P71
P70
76
5
4
3
2
1
0
P84
P83
P82
P81
P80
15
14
13
12
11
10
9
8
P91
P90
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