DS1202 Ver la hoja de datos (PDF) - Dallas Semiconductor -> Maxim Integrated

Número de pieza

componentes Descripción

Fabricante

DS1202

Serial Timekeeping Chip

Dallas Semiconductor -> Maxim Integrated 

DS1202, DS1202S

REGISTER SUMMARY

A register data format summary is shown in Figure 4.

CRYSTAL SELECTION

A 32.768 KHz crystal, can be directly connected to the

DS1202 via pins 2 and 3 (X1, X2). The crystal selected

for use should have a specified load capacitance (CL) of

6 pF. The crystal is connected directly to the X1 and X2

pins. There is no need for external capacitors or resis-

tors. Note: X1 and X2 are very high impedance nodes.

It is recommended that they and the crystal be guard–

ringed with ground and that high frequency signals be

kept away from the crystal area. For more information

on crystal selection and crystal layout considerations,

please consult Application Note 58, “Crystal Consider-

ations with Dallas Real Time Clocks”.

DATA TRANSFER SUMMARY Figure 3

SINGLE BYTE TRANSFER

SCLK

RST

I/O

01

23456

7

0

1

2

3

45

6

7

R/W A0 A1 A2 A3 A4 R/C 1

ADDRESS COMMAND

DATA INPUT/OUTPUT

BURST MODE TRANSFER

SCLK

RST

I/O

01

23

4

5

6

7

01

2

R/W 1

11

1

1 R/C 1

ADDRESS COMMAND

DATA I/O BYTE 1

45 6

7

DATA I/O BYTE N

FUNCTION

CLOCK

RAM

BYTE N

8

24

SCLK n

72

200

032697 4/11

Share Link: