M48T86 datasheet(7/36 Pages) STMICROELECTRONICS

Part #	M48T86

Description	5.0 V PC real-time clock

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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7 / 36 page

M48T86

Summary description

7/36

Table 1.

Signal names

Figure 2.

24-pin DIP connections

AD0-AD7

Multiplexed address/data bus

E

Chip enable input

R/W

WRITE enable input

DS

Data strobe input

AS

Address strobe input

RST

Reset Input

RCL

RAM clear input

MOT

Bus type select input

SQW

Square wave output

IRQ

Interrupt request output

(open drain)

VCC

Supply voltage

VSS

Ground

NC

Not connected internally

AD4

AD5

AD6

NC

AD1

AD2

AD3

NC

AD0

SQW

RST

NC

RCL

NC

IRQ

DS

AS

AD7

VSS

E

R/W

MOT

VCC

AI01641

M48T86

8

1

2

3

4

5

6

7

9

10

11

12

13

14

16

15

24

23

22

21

20

19

18

17

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