參數(shù)資料
型號： UPD780021AYCW-XXX
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.38 MHz, MICROCONTROLLER, PDIP64
封裝： 0.750 INCH, PLASTIC, SDIP-64
文件頁數(shù)： 8/96頁
文件大小： 723K
代理商： UPD780021AYCW-XXX
16
PD780021A, 780022A, 780023A, 780024A, 780021AY, 780022AY, 780023AY, 780024AY
Data Sheet U14042EJ4V0DS
3. PIN FUNCTIONS
3.1 Port Pins (1/2)
Pin Name
I/O
Function
After
Alternate
Reset
Function
P00 to P02
I/O
Port 0
Input
INTP0 to
4-bit I/O port
INTP2
P03
Input/output can be specified in 1-bit units.
INTP3/ADTRG
An on-chip pull-up resistor can be used by setting software.
P10 to P17
Input
Port 1
Input
ANI0 to ANI7
8-bit input only port
P20
I/O
Port 2
Input
SI30
P21
6-bit I/O port
SO30
P22
Input/output can be specified in 1-bit units.
SCK30
P23
An on-chip pull-up resistor can be used by setting software.
RxD0
P24
TxD0
P25
ASCK0
P30
I/O
Port 3
N-ch open-drain I/O port
Input
—
P31
7-bit I/O port
An on-chip pull-up resistor can be
P32
Input/output can be specified in
specified by the mask option.
SDA0Note 1
P33
1-bit units.
LEDs can be driven directly.
SCL0Note 1
P34
An on-chip pull-up resistor can be
SI31Note 2
P35
used by setting software.
SO31Note 2
P36
SCK31Note 2
P40 to P47
I/O
Port 4
Input
AD0 to AD7
8-bit I/O port
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be used by setting software.
The interrupt request flag (KRIF) is set to 1 by falling edge detection.
P50 to P57
I/O
Port 5
Input
A8 to A15
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 used by setting software.
P64
I/O
Port 6
Input
RD
P65
4-bit I/O port
WR
P66
Input/output can be specified in 1-bit units.
WAIT
P67
An on-chip pull-up resistor can be used by setting software.
ASTB
Notes 1. SDA0 and SCL0 are incorporated only in the
PD780024AY Subseries.
2. SI31, SO31, and SCK31 are incorporated only in the
PD780024A Subseries.
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