UPD78218ACW(A)-XXX 查看數據表（PDF） - NEC => Renesas Technology
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UPD78218ACW(A)-XXX Datasheet PDF : 66 Pages
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µPD78217A, 78218A
2.3 PIN I/O CIRCUITS AND UNUSED PIN CONNECTION
The input/output circuit type of each pin and recommended connection of unused pins are shown in Table 2-1.
For the input/output circuit configuration of each type, see Fig. 2-1.
Table 2-1 Input/Output Circuit Type of Each Pin
Pin Name
P00 to P07
P20/NMI
P21/INTP0
P22/INTP1
P23/INTP2/CI
P24/INTP3
P25/INTP4/ASCK
P26/INTP5
P27/SI
P30/RXD
P31/TXD
P32/SCK
P33/SB0/SO
P34/TO0 to P37/TO3
P40/AD0 to P47/AD7
P50/A8 to P57/A15
P60/A16 to P63/A19
P64/RD
P65/WR
P66/WAIT/AN6
P67/REFRQ/AN7
P70/AN0 to P75/AN5
ASTB
RESET
EA
AVREF
AVSS
Input/Output
Circuit Type
4
2
2-A
I/O
Output
Input
Unused Pin Connection
Leave open.
Connected to VDD or VSS .
Connected to VDD .
5-A
8-A
10-A
5-A
Input/output
Input
Output
: Connected to VDD.
: Leave open.
4
Output
Leave open.
5-A
Input/output Input
: Connected to VDD.
Output
: Leave open.
11
Input
: Connected to VDD.Note
Output
: Leave open.
9
Input
Connected to VSS .
4
Output
Leave open.
2
Input
1
Connected to VSS or VDD .Note
Connected to VSS .
Note A voltage outside the range AVSS to AVREF should not be applied, as this may damage the µPD78217A/78218A.
Caution
If the input/output mode is undefined for the input/output dual-function pins, connect these pins to
VDD via a resistor of several ten kΩ.
(Especially if the reset input pin exceeds the low-level input voltage at power-on or in case of input/
output switching by software.)
Remark The type numbers are standardized for 78K series, therefore they are not always consecutive numbers
for each product (some circuits are not incorporated).
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