NEC 78K0R/KE3 User Manual page 43

Pin Name
Note
P121/X1
Note
P122/X2/EXCLK
Note
P123/XT1
Note
P124/XT2
P130
P140/PCLBUZ0/INTP6
P141/PCLBUZ1/INTP7
AV
REF
AV
SS
FLMD0
RESET
REGC
Note Use recommended connection above in input port mode (see Figure 5-2 Format of Clock Operation
Mode Control Register (CMC)) when these pins are not used.
CHAPTER 2 PIN FUNCTIONS
Table 2-3 Connection of Unused Pins (2/2)
I/O Circuit Type I/O
37-B Input
3-C Output
8-R I/O
− −
− −
−
2-W
2 Input
− −
User's Manual U17854EJ9V0UD
Recommended Connection of Unused Pins
Independently connect to V or V
DD
Leave open.
Input: Independently connect to EV
Output: Leave open.
Make this pin the same potential as EV
See 2.2.12 AV when using P20 to P27.
REF
Make this pin the same potential as the EV
Leave open or connect to V
SS
Connect directly or via a resistor to EV
Connect to V via capacitor (0.47 to 1
SS
via a resistor.
SS
or EV via a resistor.
DD SS
or V .
DD DD
or V .
SS SS
via a resistor of 100 kΩ or more.
.
DD
μ
F).
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