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參數(shù)資料
| 型號： | UPD17236MC |
| 廠商： | NEC Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機(jī)的小型通用紅外遙控器 |
| 文件頁數(shù)： | 8/92頁 |
| 文件大小： | 378K |
| 代理商： | UPD17236MC |
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Data Sheet U14360EJ1V0DS00
μ
PD17230, 17231, 17232, 17233, 17234, 17235, 17236
8
1.
PIN FUNCTIONS
1.1
Pin Function List (1/2)
Pin No.
Symbol
Function
Output Form
On Reset
27 (28)
28 (29)
1 (1)
2 (2)
P0D
0
P0D
1
P0D
2
P0D
3
These pins constitute a 4-bit I/O port which can be set in the input
or output mode in 4-bit units (group I/O).
In the input mode, these pins serve as CMOS input pins with a
pull-up resistor, and can be used as key return input lines of a key
matrix. The standby status must be released when at least one of
the input lines goes low. In the output mode, these pins are used
as N-ch open-drain output pins and can be used as the output
lines of a key matrix.
N-ch
Low-level
output
open-drain
3 (3)
INT
External interrupt request signal. This signal releases the standby
status if an external interrupt request signal is input to it when the
INT pin interrupt enable flag (IP) is set.
–
Input
4 (4)
5 (5)
6 (6)
7 (7)
P0E
0
P0E
1
P0E
2
P0E
3
These pins constitute a 4-bit I/O port that can be set in the input or
output mode in 1-bit units.
In the output mode, this port functions as a high current CMOS
output port. In the input mode, function as CMOS input and can be
specified to connect pull-up resistor by program.
CMOS
push-pull
Input
8 (8)
REM
Outputs transfer signal for infrared remote controller.
Active-high output.
CMOS
push-pull
Low-level
output
9 (9)
V
DD
Power supply
–
–
10 (10)
11 (11)
X
OUT
X
IN
Connects ceramic resonator for system clock oscillation
–
(Oscillation
stops)
12 (12)
GND
Ground
–
–
13 (13)
RESET
Turns ON pull down resistor if POC or watchdog timer overflows
and if the stack pointer overflows or underflows, and resets the
system. Usually, the pull-down resistor is ON.
–
Input
14 (14)
P1A
0
This can be set in the input or output mode by mask option.
In the input mode, it serves as a CMOS input pin. However, it
cannot release the STOP mode.
In the output mode, this pin functions as an N-ch open-drain output
pin and can be used as an output line for a key matrix.
–
Input
(Input)
N-ch
High-
impedance
output
open-drain
(Output)
15 (16)
16 (17)
17 (18)
18 (19)
P0A
0
P0A
1
P0A
2
P0A
3
These pins are CMOS input pins with a 4-bit pull-up resistor.
They can be used as the key return input lines of a key matrix.
If any one of these pins goes low, the standby status is released.
–
Input
19 (20)
20 (21)
21 (22)
22 (23)
P0B
0
P0B
1
P0B
2
P0B
3
These pins constitute a 4-bit I/O port that can be set in the input or
output mode in 1-bit units.
In the input mode, these pins are CMOS input pins with a pull-up
resistor, and can be used as the key return input lines of a key
matrix. The standby status is released when at least one of these
pins goes low.
In the output mode, they serve as N-ch open-drain output pins and
can be used as the output lines of a key matrix.
N-ch
Input
open-drain
Remark
The number in parenthesis in the Pin No. column indicates the pin numbers of the 30-pin plastic SSOP.
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