SN8P2200 Series
USB 1.1 Low-Speed 8-Bit Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 71
Version 1.7
7.2
I/O PULL UP REGISTER
0E0H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
P0UR
- - - - -
P02R
P01R
P00R
Read/Write
- - - - - W
W
W
After
reset
- 1 1 1 1 0 0 0
0E1H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
P1UR
P17R P16R P15R - P13R P12R P11R P10R
Read/Write
W W W - W W W W
After
reset
0 0 0 - 0 0 0 0
0E5H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
P5UR
P57R P56R P55R P54R P53R P52R P51R P50R
Read/Write
W W W W W W W W
After
reset
0 0 0 0 0 0 0 0
Note: P1.4 is an input only pin without pull-up resister, so there is no P1.4 pull-up resistor control bit.
Note: When set P1.4 to input mode, please add the series external 100 ohm on it.
Note: P03~P06 are input I/O with pull up resistor, so there has no P03R~P06R pull up resistor control bit.
¾
Example: I/O Pull up Register
MOV
A, #0FFH
; Enable Port0, 1, 5 Pull-up register,
B0MOV
P0UR,
A
;
B0MOV
P1UR,
A
B0MOV
P5UR,
A