HD404669 datasheet(9/142 Pages) HITACHI

Part #	HD404669

Description	Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit

Download	142 Pages

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Manufacturer	HITACHI [Hitachi Semiconductor]

Direct Link	http://www.renesas.com/eng

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9 / 142 page

HD404669 Series

9

Block Diagram

:

Data bus

HMCS400 CPU

ROM

RAM

8-bit timer A

(free-running timer)

8-bit timer C

D0

D1

D2

D3

D4

D5

D9

D10

D11

D12

D13

R40

R41

R42

R43

R00

R01

R02

R03

R10

R11

R12

R13

R20

R21

R22

R23

R30

R31

R32

R33

R60

R61

R62

R63

TOC

VCref

COMP0

COMP1

Comparator

External interrupt

control circuit

INT

0

INT

1

INT2

INT3

INT4

R70

R71

R72

R73

8-bit timer D

EVND

TOD

Synchronous 8-bit

serial interface

SCK

1

SI1

SO1

RA0

RA1

RD0

RD1

RE0

:

Signal line

R90

R91

R92

R93

R80

R81

R82

R83

DTMF generation

circuit

VTref

TONER

TONEC

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HD404669 Datasheet(PDF) 9 Page - Hitachi Semiconductor

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