Datasheet

Section 10 I/O Ports
REJ09B0465-0300 Rev. 3.00 Page 331 of 982
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
10.10.1 Port Mode Register J (PMRJ)
b7
⎯
0
b6
⎯
0
b5
⎯
0
b4
⎯
0
b3
⎯
0
b2
⎯
0
b1
PMRJ[1:0]
0
b0
0
H'FF000C
Bit:
Address:
Value after reset:
Bit Symbol Bit Name Description R/W
7 to 2 ⎯ Reserved These bits are read as 0. The write value should be 0. ⎯
1, 0 PMRJ[1:0] Port J[1:0] mode Selects PJ1 and PJ0 pin functions.
PMRJ1 PMRJ0 PJ1 Pin PJ0 Pin
0 0 PJ1 I/O PJ0 I/O
0 1 PJ1 I/O OSC1 input*
(external clock
input)
1 0 CLKOUT PJ0 I/O
1 1 OSC2 OSC1
R/W
Note: * Set the PMRJ1 and PMRJ0 bits to 01 to input the external clock on the OSC1 pin. Do
not apply the external clock to the OSC1 pin while the PMRJ1 and PMRJ0 bits are set
to 11.