M48T86 Просмотр технического описания (PDF) - Unspecified

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Компоненты Описание

производитель

M48T86

5.0V PC Real-Time Clock

Unspecified 

M48T86

Figure 4. 24-pin DIP Connections

MOT 1

NC 2

24 VCC

23 SQW

NC 3

22 NC

AD0 4

21 RCL

AD1 5

20 NC

AD2 6

AD3 7

M48T86

19

18

IRQ

RST

AD4 8

17 DS

AD5 9

16 NC

AD6 10

15 R/W

AD7 11

14 AS

VSS 12

13 E

AI01641

Figure 6. Block Diagram

Figure 5. 28-pin SOIC Connections

NC

MOT

NC

NC

AD0

AD1

AD2

AD3

AD4

AD5

AD6

AD7

VSS

VSS

1

28

2

27

3

26

4

25

5

24

6

23

7

8

M48T86

22

21

9

20

10

19

11

18

12

17

13

16

14

15

AI01642

NC

VCC

SQW

NC

RCL

NC

IRQ

RST

DS

NC

R/W

AS

E

NC

OSCILLATOR

/8

/ 64

/ 64

E

VCC

VBAT

POWER

SWITCH

AND

WRITE

PROTECT

VCC

POK

PERIODIC INTERRUPT/SQUARE WAVE SELECTOR

CLOCK/

CALENDAR

UPDATE

SQUARE WAVE

OUTPUT

REGISTERS A,B,C,D

SQW

IRQ

RST

CLOCK CALENDAR,

AND ALARM RAM

DOUBLE

BUFFERED

DS

R/W

AS

AD0-AD7

BUS

INTERFACE

BCD/BINARY

INCREMENT

STORAGE

REGISTERS

(114 BYTES)

RCL

6/29

AI01643

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