Datasheet

CHAPTER 2 PIN FUNCTIONS
User’s Manual U18698EJ1V0UD
38
Table 2-2. Pin I/O Circuit Types (2/2)
Pin Name I/O Circuit Type I/O Recommended Connection of Unused Pins
P120/INTP0/EXLVI 5-AH I/O Input: Independently connect to VDD or VSS via a resistor.
Output: Leave open.
P121/X1/OCD0A
Note 1
P122/X2/EXCLK/
OCD0B
Note 1
P123/XT1
Note 1
P124/XT2
Note 1
37-A Input Independently connect to V
DD or VSS via a resistor.
P140/SEG8 to
P143/SEG11
P150/SEG12 to
P153/SEG15
17-P I/O
<Port setting>
Input: Independently connect to V
DD or VSS via a resistor.
Output: Leave open.
<Segment setting>
Leave open.
COM0 to COM3 18-E
COM4/SEG0 to
COM7/SEG3
18-F
Output
VLC0 to VLC2
− −
Leave open.
RESET 2 Connect directly or via a resistor to VDD.
FLMD0 38
Input
Connect to VSS.
Note 3
AVREF
Note 2
Connect directly to VDD.
Note 4
AVSS
Note 2
− −
Connect directly to VSS.
Notes 1. Use recommended connection above in I/O port mode (see Figure 5-2 Format of Clock Operation
Mode Select Register (OSCCTL)) when these pins are not used.
2.
μ PD78F041x only.
3. FLMD0 is a pin used when writing data to flash memory. When rewriting flash memory data on-board
or performing on-chip debugging, connect this pin to VSS via a resistor (10 kΩ: recommended).
4. When using port 2 as a digital port or for segment output, set it to the same potential as that of V
DD.