82C50A データシートの表示（PDF） - Renesas Electronics

部品番号

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82C50A

CMOS Asynchronous

Renesas Electronics 

82C50A

Block Diagram

D7 - D0

(1 - 8)

(40)

+5V

GND

(20)

DATA BUS

BUFFER

POWER

SUPPLY

A0

A1

A2

CS0

CS1

CS2

ADS

MR

DISTR

DISTR

DOSTR

DOSTR

DDIS

CSOUT

XTAL1

XTAL2

(28)

(27)

(26)

(12)

(13)

SELECT

&

(14)

CONTROL

(25)

LOGIC

(35)

(22)

(21)

(19)

(18)

(23)

(24)

(16)

(17)

SCRATCH

REGISTER

FN2958 Rev.6.00

August 19, 2015

RECEIVER BUFFER

REGISTER

LINE CONTROL

REGISTER

(10)

RECEIVER SHIFT

SIN

RECEIVER

RECEIVER TIMING (9)

& CONTROL

RCLK

DIVISOR

LATCH (LS)

DIVISOR

LATCH (MS)

BAUD RATE

GENERATOR

(15)

BAUDOUT

LINE STATUS

REGISTER

TRANSMITTER

HOLDING REGISTER

MODEM CONTROL

REGISTER

MODEM STATUS

REGISTER

INTERRUPT ENABLE

REGISTER

INTERRUPT IO

REGISTER

TRANSMITTER

TIMING & CONTROL

TRANSMITTER (11)

SHIFT REGISTER

SOUT

MODEM

CONTROL

LOGIC

(32)

RTS

(33)

DTR

(34)

OUT1

(31)

OUT2

(36)

CTS

(37)

DSR

(38)

DCD

(39)

RI

INTERRUPT

CONTROL

LOGIC

(30)

INTRPT

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