UPD78F0138 NEC, UPD78F0138 Datasheet - Page 36

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

2.1 Pin Function List
power supplies and the pins is shown below.
(1) Port pins (1/2)
Note SO11, SI11, SCK11, SSI11, TI001, TI011, and TO01 are available only in the
36
P00
P01
P02
P03
P04
P05
P06
P10
P11
P12
P13
P14
P15
P16
P17
P20 to P27
P30 to P32
P33
There are three types of pin I/O buffer power supplies: AV
Pin Name
780136, 780138, and 78F0138.
I/O
I/O
Input
I/O
I/O
Port 0.
7-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Port 1.
8-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Port 2.
8-bit input-only port.
Port 3.
4-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
AV
EV
V
Power Supply
DD
REF
DD
Table 2-1. Pin I/O Buffer Power Supplies
CHAPTER 2 PIN FUNCTIONS
User’s Manual U16228EJ2V0UD
P20 to P27
Port pins other than P20 to P27
Pins other than port pins
Function
Corresponding Pins
REF
, EV
DD
, and V
DD
. The relationship between these
µ
Input
Input
Input
Input
After Reset
PD780133, 780134, 78F0134,
Alternate Function
TI000
TI010/TO00
SO11
SI11
SCK11
SSI11
TI011
SCK10/TxD0
SI10/RxD0
SO10
TxD6
RxD6
TOH0
TOH1/INTP5
TI50/TO50
ANI0 to ANI7
INTP1 to INTP3
INTP4/TI51/TO51
Note
Note
Note
Note
Note
/TO01
/TI001
Note
Note