參數(shù)資料
型號： MB90487PFV
廠商： FUJITSU LTD
元件分類： 微控制器/微處理器
英文描述： 16-bit Proprietary Microcontroller CMOS
中文描述： 16-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP100
封裝： PLASTIC, LQFP-100
文件頁數(shù)： 29/113頁
文件大?。?/td> 522K
代理商： MB90487PFV
MB90480/485 Series
29
(2) Port Direction Registers
DDR0
Address : 000010
H
*1 : The value is set to “
” on MB90485 series only.
*2 : The initial value of this bit is “XX000000
B
” on MB90485 series only.
When a set of pins is functioning as a port, the corresponding signal pins are controlled as follows.
0 : Input mode
1 : Output mode
Reset to “0”.
Notes :
When any of these register are accessed using a read-modify-write type instruction (such as a bit set
instruction) , the bit specified in the instruction will be set to the indicated value. However, the contents
of output registers corresponding to any other bits having input settings will be rewritten to the input values
of those pins at that time.
For this reason, when changing any pin that has been used for input to output, first write the desired value
to the PDR register before setting the DDR register for output.
P76, P77 (MB90485 series only)
This port has no DDR. To use P77, P76 and I
2
C pins, set the PDR value to “1” so that port data remains
enabled (to use P77 adn P76 for general purposes, disable I
2
C) . The port is an open drain output (with
no Pch) .
To use it as an input port, therefore, set the PDR to “1” to turn off the output trangistor and add a pull-up
resistor to the external output.
Initial value
00000000
B
Access
R/W
DDR1
Address : 000011
H
00000000
B
R/W
DDR2
Address : 000012
H
00000000
B
R/W
DDR3
Address : 000013
H
00000000
B
R/W
DDR4
Address : 000014
H
00000000
B
R/W
DDR5
Address : 000015
H
00000000
B
R/W
DDR6
Address : 000016
H
00000000
B
R/W
DDR7
Address : 000017
H
00000000
B
*
2
R/W
DDR8
Address : 000018
H
00000000
B
R/W
DDR9
Address : 000019
H
00000000
B
R/W
DDRA
Address : 00001A
H
- - - - 0000
B
R/W
7
6
5
4
3
2
1
0
D06
D07
D05
D04
D03
D02
D01
D 00
D16
D17
D15
D14
D13
D12
D11
D10
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
D26
D27
D25
D24
D23
D22
D21
D20
7
6
5
4
3
2
1
0
D36
D37
D35
D34
D33
D32
D31
D30
7
6
5
4
3
2
1
0
D46
D47
D45
D44
D43
D42
D41
D40
7
6
5
4
3
2
1
0
D56
D57
D55
D54
D53
D52
D51
D50
7
6
5
4
3
2
1
0
D66
D67
D65
D64
D63
D62
D61
D60
7
6
5
4
3
2
1
0
D75
D74
D73
D72
D71
D70
D77*
1
D76*
1
7
6
5
4
3
2
1
0
D86
D87
D85
D84
D83
D82
D81
D80
7
6
5
4
3
2
1
0
D96
D97
D95
D94
D93
D92
D91
D90
7
6
5
4
3
2
1
0
DA3
DA2
DA1
DA0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MB90488B 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90488BPF 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90488BPFV 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller
MB90488BPMC 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Microcontroller
MB90495 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:16-bit Proprietary Microcontroller CMOS
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