UPD17217CT-XXX データシートの表示（PDF） - NEC => Renesas Technology

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UPD17217CT-XXX

4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER

NEC => Renesas Technology 

µPD17215, 17216, 17217, 17218

1. PIN FUNCTIONS

1.1 Pin Function List

No.

Symbol

Function

Output Form On Reset

15

P0A0

4-bit CMOS input port with pull-up resistor.

16

P0A1

Can be used for key return input of key matrix. When at least

17

P0A2

one of these pins goes low, standby function is released.

18

P0A3

-

Input

19

P0B0

4-bit CMOS input port with pull-up resistor.

20

P0B1

Can be used for key return input of key matrix. When at least

21

P0B2

22

P0B3

one of these pins goes low,standby function is released.

-

Input

23

P0C0

4-bit N-ch open-drain output port.

24

P0C1

Can be used for key source output of key matrix.

25

P0C2

26

P0C3

N-ch

Open-

drain

Low-

level

output

27

P0D0

4-bit N-ch open-drain output port.

28

P0D1

Can be used for key source output of key matrix.

1

P0D2

2

P0D3

N-ch

Open-

drain

Low-

level

output

4-bit input/output port.

4

P0E0

Can be set in inputset in input or output mode in 1-bit units.

CMOS

5

P0E1

In output mode, this port functions as a highcurrent CMOS output

push-

Input

6

P0E2

port. In input mode, function as CMOS input and can bespecified

pull

7

P0E3

to connect pull-up resistor by program.

Outputs transfer signal for infrared remotecontroller.

8

REM

Active-high output.

CMOS

pusl-pll

Low-level

output

System reset input. CPU can be reset when low-level signal is

input to this pin. While low-level signal is input, oscillator circuit is

13

RESET

stopped. Can be connected to pull-upresistor by mask option.

-

Input

9

VDD

Power supply

-

-

12

GND

Ground

-

-

3

INT

External interrupt request signal input

-

Input

Output detecting hang-up and drop in supply voltage.This pin

High-

14

WDOUT

outputs at low level either when an overflow occurs in the

watchdog timer, when an overflow/underflow occurs in the stack,

or when the supply voltage drops below a specified level (mask

option). Connect this pin to the RESET pin.

N-ch

Open-

drain

impedance

Low-level 

outvpoulttaagtelow

detection 

11

XIN

Connects ceramic oscillator for system clock oscillation

10

XOUT

(Oscillation

-

stops)

7

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