MC68HC68 데이터 시트보기 (PDF) - Motorola => Freescale

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MC68HC68

Real-Time Clock plus RAM with Serial Interface

Motorola => Freescale 

BLOCK DIAGRAM

AM/PM

AND HOUR LOGIC

CALENDAR

LOGIC

XTALin 14

XTALout 15

13

VBATT

11

LINE

OSCILLATOR

PRESCALE

SECOND

50/60 Hz

STOP/START

PRESCALE CLOCK

SELECT SELECT

MINUTE

HOUR

DAY/

DATE

1

CLKOUT

3

INT

CLOCK

AND

INT

LOGIC

VSYS 12

10

POR

PSE 9

CPUR 2

SCK 4

MISO 6

5

MOSI

SS 7

POWER

SENSE

CONTROL

CLOCK

CONTROL REG

INTERRUPT

CONTROL REG

STATUS

REGISTER

8–BIT DATA BUS

COMPARATOR

SECOND MINUTE

LATCH LATCH

HOUR

LATCH

32 x 8

RAM

SERIAL

INTERFACE

FREEZE

CIRCUIT

PIN 16 = VDD

PIN 8 = VSS

MONTH

YEAR

MC68HC68T1

2

MOTOROLA

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