UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 68

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

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66
P70/CRxD
P71/CTxD
P72/SGOA/PCL
P73/SGO/SGOF/BUZ
P74/SCK11
P75/SI11
P76/SO11
P77/SSI11/<TIOP20>
P80/SEG24 to P87/SEG31
P90/SM31 to P92/SM33
P93/SM34/ZPD34
P94/SM41 to P96/SM43
P97/SM44/ZPD44
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.
Remark The functions within arrowheads (<>) can be assigned by setting the input switch control register (ISC).
REF
SS
DD
SS
2. Use the recommended connection above in I/O port mode (see Figure 5-5 Format of Clock
3. Connect P121/X1 as follows when writing the flash memory with a flash memory programmer.
Note 2
Note 1
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
/<TxD60>
/<RXD60/INTPR60>
PD78F0846 and 78F0847 only.
(in the input mode) or leave it open (in the output mode).
Note 2, 3
Note 2
Note 2
(c) 78K0/DF2 ( PD78F0840, 78F0841, 78F0846, 78F0847) (2/2)
5-AH
5-AG
5-AW
5-AU
5-AW
17-X
5-AW
5-AV
5-AU
5-AX
5-AH
37-D
17-U
18-G
2
38
I/O Circuit
Table 2-6. Pin I/O Circuit Types (6/8)
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.