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參數(shù)資料
| 型號(hào)： | UPD780021AY |
| 廠商： | NEC Corp. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| 中文描述： | 8位單晶片微控制器 |
| 文件頁(yè)數(shù)： | 13/90頁(yè) |
| 文件大小： | 660K |
| 代理商： | UPD780021AY |
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μ
PD78F0034B, 78F0034BY, 78F0034B(A), 78F0034BY(A)
13
Data Sheet U16369EJ1V0DS
3. PIN FUNCTIONS
3.1 Port Pins (1/2)
Pin Name
I/O
Function
After Reset
Alternate
Function
P00
I/O
Port 0
4-bit I/O port.
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be specified by software.
Input
INTP0
P01
INTP1
P02
INTP2
P03
INTP3/ADTRG
P10 to P17
Input
Port 1
8-bit input-only port.
Input
ANI0 to ANI7
P20
I/O
Port 2
6-bit I/O port.
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be specified by software.
Input
SI30
P21
SO30
P22
SCK30
P23
RxD0
P24
TxD0
P25
ASCK0
P30
I/O
Port 3
7-bit I/O port.
Input/output can be specified
in 1-bit units.
N-ch open-drain I/O port.
LEDs can be driven directly.
Input
–
P31
P32
SDA0
Note 1
P33
SCL0
Note 1
P34
An on-chip pull-up resistor can be
specified by software.
SI31
Note 2
P35
SO31
Note 2
P36
SCK31
Note 2
P40 to P47
I/O
Port 4
8-bit I/O port.
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be specified by software.
Interrupt request flag KRIF is set to 1 by falling edge detection.
Input
AD0 to AD7
P50 to P57
I/O
Port 5
8-bit I/O port.
LEDs can be driven directly.
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be specified by software.
Input
A8 to A15
P64
I/O
Port 6
4-bit I/O port.
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be specified by software.
Input
RD
P65
WR
P66
WAIT
P67
ASTB
Notes 1.
SDA0 and SCL0 are incorporated only in the
μ
PD78F0034BY and 78F0034BY(A).
SI31, SO31, and SCK31 are incorporated only in the
μ
PD78F0034B and 78F0034B(A).
2.
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