Renesas R8C/15 Technical Information Seite 199

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R8C/14 Group, R8C/15 Group 17. Programmable I/O Ports
Rev.2.10 Jan 19, 2006 Page 185 of 253
REJ09B0164-0210
Figure 17.7 PUR0 and PUR1 Registers
Figure 17.8 DRR Register
Pull-Up Control Register 0
Symbol Address After Reset
PUR0
00FCh 00XX0000b
Bit Symbol Bit Name Function RW
NOTES :
1.
RW
When this bit is set to “1” (pulled up), the pin w hose direct bit is set to “0” (input mode) is pulled up.
PU07
PU06
RW
RW
RWP1_4 to P1_7 pull-up
(1)
PU02
(b5-b4)
PU03
b3 b2 b1
0
b0
0
(b1-b0)
b7 b6 b5 b4
P1_0 to P1_3 pull-up
(1)
Reserved Bit
P3_4 to P3_5 and P3_7 pll-up
(1)
P3_3 pull-up
(1)
RW0 : Not pulled up
1 : Pulled up
Nothing is assigned. When w rite, set to “0”.
When read, its content is indeterminate.
0 : Not pulled up
1 : Pulled up
Set to0”
Pull-up Control Register 1
Symbol Address After Reset
PUR1
00FDh XXXXXX0Xb
Bit Symbol Bit Name Function RW
NOTES :
1.
PU11
P4_5 pull-up
(1)
0 : Not pulled up
1 : Pulled up
RW
(b7-b2)
Nothing is assigned. When write, set to “0”.
When read, its content is indeterminate.
(b0)
Nothing is assigned. When write, set to “0”.
When read, its content is indeterminate.
b7 b6 b5 b4 b0
When the PU11 bit is set to “1” (pulled up) and the PD4_5 bit is set to “0” (input mode), the P4_5 pin is
pulled up.
b3 b2 b1
Port P1 Drive Capacity Control Register
Symbol Address After Reset
DRR
00FEh 00h
Bit Symbol Bit Name Function RW
RW
Set P1 N-channel output transistor drive
capacity
0 : Low
1 : High
Reserved Bit(b7-b4)
RWP1_0 Drive Capacity
DRR3 P1_3 Drive Capacity RW
RW
RWP1_2 Drive Capacity
DRR1 P1_1 Drive Capacity
b1 b0
0
b3 b2
DRR0
DRR2
Set to “0”
b7 b6 b5 b4
000
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