Datasheet

Section 10 I/O Ports
Page 322 of 982 REJ09B0465-0300 Rev. 3.00
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
• H8S/20223 and H8S/20235 Groups
10.8.9 Port Mode Register A (PMRA)
b7
⎯
0
b6
⎯
0
b5
⎯
0
b4
⎯
0
b3
PMRA3
0
b2
PMRA2
0
b1
⎯
0
b0
⎯
0
H'FF0009
Bit:
Address:
Value after reset:
Bit Symbol Bit Name Description R/W
7 to 4 ⎯ Reserved These bits are read as 0. The write value should
be 0.
⎯
3 PMRA3 Port A4 analog
input select
0: General I/O port
1: AN0_2 input pin
R/W
2 PMRA2 Port B0 analog
input select
0: General I/O port
1: AN0 input pin
R/W
1, 0 ⎯ Reserved These bits are read as 0. The write value should
be 0.
⎯
PMRA selects the analog input function for PA4 and PB0 functioning as general I/O.
• PMRA3 bit (Port A4 analog input select)
This bit selects the analog input function for PA4.
• PMRA2 bit (Port B0 analog input select)
This bit selects the analog input function for PB0.