HD404459 Datasheet, PDF (54/122 Pages) Renesas Technology Corp – 4-bit HMCS400-series microcomputers

HD404459 Series
Pins R3₃ and R4₀ are multiplexed with peripheral pins EVNB and EVND, respectively. The peripheral
function modes of these pins are selected by bits 0 and 1 (PMRC0, PMRC1) of port mode register C
(PMRC: $025) (figure 35).
Port mode register C (PMRC: $025)
Bit
Initial value
Read/Write
Bit name
3
2
1
0
—
0
0
0
—
W
W
W
Not used PMRC2* PMRC1 PMRC0
PMRC0
0
1
R3₃/EVNB mode selection
R3₃
EVNB
PMRC1
0
1
R4₀/EVND mode selection
R4₀
EVND
PMRC2
0
1
D₁₁/STOPC mode selection
D₁₁
STOPC
Note: * PMRC2 is reset to 0 only by RESET input. When STOPC is input in stop mode,
PMRC2 is not reset but retains its value.
Figure 35 Port Mode Register C (PMRC)
52