4250 datasheet(5/59 Pages) RENESAS

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4250 データシート(PDF) 5 Page - Renesas Technology Corp

部品番号	4250

部品情報	SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

PDF	59 Pages

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メーカー	RENESAS [Renesas Technology Corp]

ホームページ	http://www.renesas.com

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MITSUBISHI MICROCOMPUTERS

4250 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

PIN DESCRIPTION

Name

Power supply

Ground

CNVSS

Reset input

System clock input

System clock output

I/O port F

I/O port G

I/O port S

I/O port D

I/O port C

I/O port K

Timer output

Interrupt input

Input/Output

—

Input

Output

I/O

Output

Input

Function

Connected to a plus power supply.

Connected to a 0 V power supply.

Connect CNVSS to VSS and apply “L” (0V) to CNVSS certainly.

Reset pulse input pin

I/O pins of the system clock generating circuit. Connect pins XIN and XOUT directly.

Then, pull up XIN pin through a resistor and pull down XOUT pin through a capacitor.

2-bit I/O port; for input use, set the latch of the specified bit to “1.” The output

structure is N-channel open-drain.

4-bit I/O port. For input use, set the latch of the specified bit to “1.” The output

structure is N-channel open-drain. Every pin of the ports has a key-on wakeup

function and a pull-up function. Both functions can be switched by software.

Ports G0 and G1 are also used as pins INT and TOUT, respectively.

4-bit I/O port. For input use, set the latch of the specified bit to “1.” The output

structure is N-channel open-drain. Every pin of the ports has a key-on wakeup

function which can be switched by software. Also, it is used to perform the logic

operation using register A.

Each pin of port D has an independent 1-bit wide I/O function. For input use, set

the latch of the specified bit to “1.” The output structure is N-channel open-drain.

Ports D2 and D3 are also used as ports C and K, respectively.

1-bit I/O port. For input use, set the latch of the specified bit to “1.” The output

structure is N-channel open-drain. Port C has a pull-up function which can be

switched by software. It is also used as port D2.

1-bit I/O port. For input use, set the latch of the specified bit to “1.” The output

structure is N-channel open-drain. Port K has a pull-up function which can be

switched by software. It is also used as port D3.

TOUT pin has the function to output the timer 1 underflow signal divided by 2. It is

also used as port G1.

INT pin accepts an external interrupt. It also accepts the input signal to return the

system from the RAM back-up state. It is also used as port G0.

VDD

VSS

CNVSS

RESET

XIN

XOUT

F0, F1

G0–G3

S0–S3

D0–D3

TOUT

INT

同様の部品番号 - 4250

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同様の説明 - 4250

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