HD404889_03 Datasheet, PDF (69/197 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit

HD404889/HD404899/HD404878/HD404868 Series
Table 22 Programmable I/O Circuits
MIS3 (bit 3 of MIS)
DCD,DCR
PDR
CMOS buffer PMOS
NMOS
pull-up MOS
Note: — : OFF
0
0
1
0
1
0
1
—
—
—
ON
—
—
ON
—
—
—
—
—
1
0
1
0
1
0
1
—
—
—
ON
—
—
ON
—
—
ON
—
ON
Table 23 Circuit Configurations of I/O Pins
Type
I/O pins
Circuit Configuration
VCC _VCC
Pull-up control signal
Buffer control signal
Output data
MIS3
DCD, DCR
PDR
Input data
Input control signal
VCC _VCC
Pull-up control signal
Buffer control signal
Output data
MIS3
DCR
SMR22
PDR
Pins
D -D
0 11
R0 -R0
0
3
R1₀-R1₃
R2 , R2 , R2
0
1
3
R3₀-R3₃
R4 -R4
0
3
R5₀-R5₃
R6₀-R6₃
R7 -R7
0
3
R8₀-R8₁
R2₂
Perip- I/O pins
heral
function
pins
Input data
Input control signal
VCC _VCC
Pull-up control signal
Output data
MIS3
SCK
PDR
I/O control signal
SCK
Input data
SCK
Note: In a reset, since the I/O control registers are reset, input/output pins go to the high-impedance state
and peripheral function selections are cleared.
Rev.6.00, Sep.08.2003, page 69 of 197