LAPIS Semiconductor ML610472, User Manual

Page: 186 / 281

ML610471/472/473/Q471/Q472/Q473 User's Manual
Chapter 14 Port 3
14-6
14.2.5 Port 3 Mode Register 0 (P3MOD0)
Address: 0F21CH
Access: R/W
Access size: 8/16 bit
Initial value: 00H
7 6 5 4 3 2 1 0
P3MOD0
⎯ ⎯
P35MD0
⎯ ⎯ ⎯ ⎯ ⎯
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
P3MOD0 is a special function register (SFR) to select the primary function or the secondary function of Port 3.
[Description of Bits]
•
P35MD0 (bit 5)
The P35MD0 bit is used to select the primary or secondary function of the P35 pin.
P35MD0 Description
0 General-purpose input/output mode (initial value)
1 RC oscillation monitor pin for RC-ADC
Note:
When using the RC-ADC as the secondary function, set the P3DIR, P3CON0, and P3CON1 registers to bring each
pin state to high-impedance input (same for when using the RC oscillation monitor function).
Pull-up or Pull-down input makes drawing the current.