UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 66

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

<R>
64
P70/<RXD60/INTPR60>
P71/<TxD60>
P72/SGOA/PCL
P73/SGO/SGOF/BUZ
P74/SCK11
P75/SI11
P76/SO11
P77/SSI11/<TIOP20>
P80/SEG24 to P87/SEG31
P90/SEG32 to P93/SEG35
P94/SEG36 to P97/SEG39
P120/EXLVI
P121/X1/OCD0A
P122/X2/EXCLK/OCD0B
P123/XT1
P124/XT2/EXCLKS
SEG0 to SEG3
COM0 to COM3
RESET
AV
AV
SMV
SMV
FLMD0
Notes 1. Use the recommended connection above in I/O port mode (see Figure 5-5 Format of Clock
Remark The functions within arrowheads (<>) can be assigned by setting the input switch control register (ISC).
REF
SS
DD
SS
2. Connect P121/X1 as follows when writing the flash memory with a flash memory programmer.
Note 1
Operation Mode Select Register (OSCCTL)) when these pins are not used.
- P121/X1: When using this pin as a port, connect it to V
The above connection is not necessary when writing the flash memory by means of self programming.
Pin Name
(in the input mode) or leave it open (in the output mode).
Note 1, 2
Note 1
Note 1
(b) 78K0/DF2 ( PD78F0838, 78F0839) (2/2)
5-AH
5-AG
5-AW
5-AU
5-AW
17-X
17-W
17-X
5-AH
37-D
17-U
18-G
2
38
I/O Circuit
Table 2-6. Pin I/O Circuit Types (4/8)
Preliminary User’s Manual U19748EJ1V0UD
Type
–
–
CHAPTER 2 PIN FUNCTIONS
I/O
I/O
I/O
Output
Input
Input
I/O
–
–
Input:
Output: Leave open.
Input:
Output: Leave open.
Input:
Output: Leave open.
Leave open.
Connect directly to V
Connect directly to V
Connect directly to V
Connect directly to V
Connect directly to V
Independently connect to V
Independently connect to SMV
Independently connect to V
Recommended Connection of Unused Pins
SS
via a resistor (10 kΩ: recommended)
DD
SS
DD
SS
SS
.
.
.
.
.
–
SS
DD
via a resistor.
or V
SS
via a resistor.
SS
via a resistor.