Datasheet
Section 9 Peripheral I/O Mapping Controller 
REJ09B0465-0300 Rev. 3.00     Page 263 of 982 
Sep 17, 2010     
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group 
(b)  Port 8 Peripheral Function Mapping Register 4 (PMCR84) 
b7
⎯
0
b6
1
b5
P87MD[2:0]
0
b4
0
b3
⎯
0
b2
1
b1
P86MD[2:0]
0
b0
0
H'FF005F
Bit:
Address: 
Value after reset:
Bit Symbol Bit Name Description  R/W 
7  ⎯  Reserved  This bit is always read as 0. The write value should 
always be 0. 
⎯ 
6 to 4  P87MD[2:0]  P87 function 
select 
000: Setting prohibited 
001: IRQ7 input 
010: Setting prohibited 
011: TXD output (SCI3_1) 
100: TREO output (timer RE) (initial value) 
101: FTIOD3 input/output (timer RD_1)* 
110: TXD_3 output (SCI3_3) 
111: Setting prohibited 
R/W 
3  ⎯  Reserved  This bit is always read as 0. The write value should 
always be 0. 
⎯ 
2 to 0  P86MD[2:0]  P86 function 
select 
000: Setting prohibited 
001: IRQ6 input 
010: Setting prohibited 
011: RXD input (SCI3_1) 
100: TRBO output (timer RB) (initial value) 
101: FTIOC3 input/output (timer RD_1)* 
110: RXD_3 input (SCI3_3) 
111: Setting prohibited 
R/W 
Note:  *  This function cannot be selected for the H8S/20103 and H8S/20115 Groups. 










