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UPD780138 Datasheet(PDF) 36 Page - NEC

No. de Pieza. UPD780138
Descripción  8-Bit Single-Chip Microcontrollers
Descarga  558 Pages
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Fabricante  NEC [NEC]
Página de inicio  http://www.nec.com/
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UPD780138 Datasheet(HTML) 36 Page - NEC

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User’s Manual U16228EJ2V0UD
36
CHAPTER 2 PIN FUNCTIONS
2.1 Pin Function List
There are three types of pin I/O buffer power supplies: AVREF, EVDD, and VDD. The relationship between these
power supplies and the pins is shown below.
Table 2-1. Pin I/O Buffer Power Supplies
Power Supply
Corresponding Pins
AVREF
P20 to P27
EVDD
Port pins other than P20 to P27
VDD
Pins other than port pins
(1) Port pins (1/2)
Pin Name
I/O
Function
After Reset
Alternate Function
P00
TI000
P01
TI010/TO00
P02
SO11
Note
P03
SI11
Note
P04
SCK11
Note
P05
SSI11
Note/TI001Note
P06
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.
Input
TI011
Note/TO01Note
P10
SCK10/TxD0
P11
SI10/RxD0
P12
SO10
P13
TxD6
P14
RxD6
P15
TOH0
P16
TOH1/INTP5
P17
I/O
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.
Input
TI50/TO50
P20 to P27
Input
Port 2.
8-bit input-only port.
Input
ANI0 to ANI7
P30 to P32
INTP1 to INTP3
P33
I/O
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.
Input
INTP4/TI51/TO51
Note SO11, SI11, SCK11, SSI11, TI001, TI011, and TO01 are available only in the
µPD780133, 780134, 78F0134,
780136, 780138, and 78F0138.


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