3823 Datasheet, PDF (22/76 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

3823 Group
Table 8 Termination of unused pins
Pin
Termination 1 (recommend)
P00/SEG16–P17/SEG23 I/O port
P10/SEG24–P17/SEG31
P20/KW0–P27/KW7
P34/SEG12–P37/SEG15
P40/(VPP)
P41/φ
P42/INT0
Input port
Input port (pull-down)
I/O port
P43/INT1
P44/RxD
P45/TxD
P46/SCLK
P47/SRDY/SOUT
P50/INT2
P51/INT3
P52/RTP0
P53/RTP1
P54/CNTR0
P55/CNTR1
P56/TOUT
P57/ADT
P60/AN0–P67/AN7
P70/XCOUT
P71/XCIN
VL3 (Note)
VL2 (Note)
VL1 (Note)
COM0–COM3
SEG0–SEG11
AVSS
VREF
XOUT
Connect to VSS
Connect to VSS
Connect to VSS
Open
Open
Connect to VSS
Connect to VCC or VSS
When an external clock is
input to the XIN pin, leave
the XOUT pin open.
Termination 2
When selecting SEG output, open.
Termination 3
–
When selecting KW function, perform
–
termination of input port.
When selecting SEG output, open.
–
–
–
When selecting φ output, open.
–
When selecting INT0 function,
–
perform termination of input port.
When selecting INT1 function,
–
perform termination of input port.
When selecting RXD function,
–
perform termination of input port.
When selecting TXD function,
–
perform termination of output port.
When selecting external clock input, When selecting internal clock output,
perform termination of input port.
perform termination of output port.
When selecting SRDY function,
perform termination of output port.
When selecting SOUT function,
perform termination of output port.
When selecting INT2 function,
–
perform termination of input port.
When selecting INT3 function,
–
perform termination of input port.
When selecting RTP0 function,
–
perform termination of output port.
When selecting RTP1 function,
–
perform termination of output port.
When selecting CNTR0 input function, When selecting CNTR0 output function,
perform termination of input port.
perform termination of output port.
When selecting CNTR1 function,
–
perform termination of input port.
When selecting TOUT function,
–
perform termination of output port.
When selecting ADT function,
–
perform termination of input port.
When selecting AN function, these
–
pins can be opened. (A/D conversion
result cannot be guaranteed.)
Do not select XCIN-XCOUT oscillation
–
function by program.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Note : The termination of VL3, VL2 and VL1 is applied when the bit 3 of the LCD mode register is “0”
Rev.2.02 Jun 19, 2007 page 22 of 73
REJ03B0146-0202