CHAPTER 2 PIN FUNCTIONS
43
User’s Manual U11302EJ4V0UM
2.3 Pin I/O Circuits and Recommended Connection of Unused Pins
Table 2-1 shows the I/O circuit types of pins and the recommended connections of unused pins.
Refer to Figure 2-1 for the configuration of the I/O circuit of each type.
Table 2-1. Types of Pin I/O Circuits (1/2)
Pin Name
I/O
I/O
Recommended Connection of Unused Pins
Circuit Type
P00/INTP0/TI0
2
Input
Connect to V
SS
.
P01/INTP1
8-A
I/O
Input: Independently connect to V
SS
via a resistor.
P02/INTP2
Output: Leave open.
P03/INTP3
P04/XT1
16
Input
Connect to V
DD
or V
SS
.
P10/ANI0 to P17/ANI7
11
I/O
Input: Independently connect to V
DD
or V
SS
via a resistor.
P20/SI1
8-A
Output: Leave open.
P21/SO1
5-A
P22/SCK1
8-A
P23/STB
5-A
P24/BUSY
8-A
P25/SI0/SB0
10-A
P26/SO0/SB1
P27/SCK0
Mask ROM version
P30/TO0
5-C
I/O
Input: Independently connect to V
DD
or V
SS
via a resistor
Note
.
P31/TO1
Output: Leave open.
P32/TO2
P33/TI1
8-B
P34/TI2
P35/PCL
5-C
P36/BUZ
P37
Note
Leave open when an on-chip pull-down resistor is specified by the mask option.
Содержание mPD780208 Subseries
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