Rohm LAPIS SEMICONDUCTOR ML620Q503, User Manual

Page: 419 / 553

ML620Q503/Q504 User's Manual
Chapter 22 Port 5
FEUL620Q504 22-9
22.2.4 Port 5 Control Register (P5CON)
Address: 0F23AH
Access: R/W
Access size: 8/16 bit
Initial value: 0000H
7 6 5 4 3 2 1 0
P5CON0
P57C0 P56C0 P55C0 P54C0 P53C0 P52C0 P51C0 P50C0
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
15 14 13 12 11 10 9 8
P5CON1
P57C1 P56C1 P55C1 P54C1 P53C1 P52C1 P51C1 P50C1
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
P5CON0 and P5CON1 are special function registers (SFRs) used to select the output state of the port 5 pin. The
output state is different between input mode and output mode. Input or output is selected by using the P5DIR
register.
Description of Bits
•
P57-50C0 (bits 7 to 0) , P57-50C1 (bits 15 to 8)
The P57-50C0 and P57-50C1 bits are used to select high-impedance output, P-channel open drain output,
N-channel open drain output, or CMOS output in output mode and to select high-impedance input, input
with a pull-down resistor, or input with a pull-up resistor in input mode.
To perform the direct LED drive, select N-channel open drain output mode.
Setting of P50 pin
When output mode is selected
(P50DIR bit = “0”)
When input mode is selected
(P50DIR bit = “1”)
P50C1 P50C0 Description
0 0 High-impedance output (initial value) High-impedance input
0 1 P-channel open drain output Input with a pull-down resistor
1 0 N-channel open drain output Input with a pull-up resistor
1 1 CMOS output High-impedance input
Setting of P51 pin
When output mode is selected
(P51DIR bit = “0”)
When input mode is selected
(P51DIR bit = “1”)
P51C1 P51C0 Description
0 0 High-impedance output (initial value) High-impedance input
0 1 P-channel open drain output Input with a pull-down resistor
1 0 N-channel open drain output Input with a pull-up resistor
1 1 CMOS output High-impedance input