CHAPTER 2 PIN FUNCTIONS
44
User’s Manual U11302EJ4V0UM
Table 2-1. Types of Pin I/O Circuits (2/2)
Pin Name
I/O
I/O
Recommended Connection of Unused Pins
Circuit Type
µ
PD78P0208
P30/TO0
5-A
I/O
Input: Independently connect to V
DD
or V
SS
via a resistor.
P31/TO1
Output: Leave open.
P32/TO2
P33/TI1
8-A
P34/TI2
P35/PCL
5-A
P36/BUZ
P37
Mask ROM version
P70 to P74
13-B
I/O
Input: Independently connect to V
DD
or V
SS
via a resistor
Note
.
Output: Leave open.
FIP0 to FIP12
14-A
Output
Leave open.
P80/FIP13 to P87/FIP20
P90/FIP21 to P97/FIP28
P100/FIP29 to P107/FIP36
15-C
I/O
Input: Independently connect to V
DD
or V
SS
via a resistor
Note
.
P110/FIP37 to P117/FIP44
Output: Leave open.
P120/FIP45 to P127/FIP52
IC
—
—
Connect directly to V
SS
.
µ
PD78P0208
P70 to P74
13-D
I/O
Input: Independently connect to V
DD
or V
SS
via a resistor.
Output: Leave open.
FIP0 to FIP12
14
Output
Leave open.
P80/FIP13 to P87/FIP20
14-B
Output
Leave open.
P90/FIP21 to P97/FIP28
P100/FIP29 to P107/FIP36
15-B
I/O
Input: Independently connect to V
DD
or V
SS
via a resistor.
P110/FIP37 to P117/FIP44
Output: Leave open.
P120/FIP45 to P127/FIP52
V
PP
—
—
Connect directly to V
SS
.
RESET
2
Input
—
XT2
16
—
Leave open.
AV
REF
—
Connect directly to V
SS
.
AV
DD
Connect directly to V
DD
.
AV
SS
Connect directly to V
SS
.
V
LOAD
Note
Leave open when an on-chip pull-up or pull-down resistor is specified by the mask option.
Содержание mPD780208 Subseries
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