參數(shù)資料
型號(hào)： UPD78046H
廠商： NEC Corp.
元件分類(lèi)： DC/DC變換器
英文描述： 1 watt dc-dc converters
中文描述： 1瓦的DC - DC轉(zhuǎn)換器
文件頁(yè)數(shù)： 9/58頁(yè)
文件大小： 552K
代理商： UPD78046H
9
μ
PD78044H, 78045H, 78046H
3. PIN FUNCTIONS
3.1 PORT PINS (1/2)
Port 1
8-bit I/O port
Can be specified for input or output in 1-bit units.
When used as an input port pin, a built-in pull-up resistor can be
connected through software.
Note 2
Port 2
8-bit I/O port
Can be specified for input or output in 1-bit units.
When used as an input port pin, a built-in pull-up resistor can be
connected through software.
Notes 1.
When the P04/XT1 pin is used as an input port pin, bit 6 (FRC) of the processor clock control register
(PCC) must be set to 1. At this time, do not use the feedback resistor of the subsystem clock oscillator
circuit.
2.
When the P10/ANI0 through P17/ANI7 pins are used as the analog input lines of the A/D converter, be
sure to place the port 1 in the input mode. In this case, the built-in pull-up resistors are automatically
unused.
Pin
P00
P01
P02
P03
P04
Note 1
P10-P17
P20
P21
P22
P23
P24
P25
P26
P27
P30
P31
P32
P33
P34
P35
P36
P37
Port 0
5-bit I/O port
Input only
Can be specified for input or output in 1-
bit units. When used as an input port
pin, a built-in pull-up resistor can be
connected through software.
Input only
Function
Port 3
N-ch open-drain 8-bit I/O port
Can be specified for input or output in 1-bit units.
Can directly drive LEDs.
A built-in pull-up resistor can be connected in 1-bit units by the
mask option.
Input
I/O
Input
I/O
I/O
I/O
I/O
Shared by:
On reset
Input
Input
Input
Input
Input
Input
INTP0/TI0
INTP1
INTP2
INTP3
XT1
ANI0-ANI7
SI1
SO1
SCK1
—
—
—
—
—
TO0
TO1
TO2
—
—
PCL
BUZ
—
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