Rainbow-electronics DS1302 Manual de usuario descargar pdf (Pagina 10)

DS1302

041697 10/12

AC ELECTRICAL CHARACTERISTICS (cont’d) (0°C to 70°C; V

= +5V ± 10%*)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

CLK to RST Hold

CCH

=2.5V 240

CLK

RST

CCH

=5V 60

RST Inactive Time

CWH

=2.5V 4

µs

RST

nac

CWH

=5V 1

µs

RST to I/O High Z

CDZ

=2.5V 280

RST

I/O

CDZ

=5V 70

SCLK to I/O High Z

CCZ

=2.5V 280

SCLK

I/O

CCZ

=5V 70

*Unless otherwise noted.

TIMING DIAGRAM: READ DATA TRANSFER Figure 5

CDD

CCZ

CDH

017

RST

SCLK

I/O

WRITE COMMAND BYTE READ DATA BIT

0 1

CDD

CDZ

TIMING DIAGRAM: WRITE DATA TRANSFER Figure 6

RST

SCLK

I/O

CWH

CCH

CDH

WRITE COMMAND BYTE WRITE DATA

1 2 ... 5 6 7 8 9 10 11 12

FEATURES 1
PIN ASSIGNMENT 1
PIN DESCRIPTION 1
ORDERING INFORMATION 1
DESCRIPTION 1
ADDRESS/COMMAND BYTE Figure 2 2
OPERATION 2
COMMAND BYTE 2
DS1302 BLOCK DIAGRAM Figure 1 2
041697 3/12 3
041697 4/12 4
SINGLE BYTE TRANSFER 5
BURST MODE TRANSFER 5
A. CLOCK 6
ABSOLUTE MAXIMUM RATINGS* 8
= 2.5 to 5.5V*) 8
041697 9/12 9
= +5V ± 10%*) 10

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Rainbow-electronics DS1302 Manual de usuario Pagina 10

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