Rainbow-electronics DS1305 Manual de usuario Pagina 17

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DS1305
17 of 20
3-WIRE AC ELECTRICAL CHARACTERISTICS Over the operating range*
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
V
CC
= 2.0V 200
Data to CLK Setup t
DC
V
CC
= 5V 50
ns 3,4
V
CC
= 2.0V 280
CLK to Data Hold t
CDH
V
CC
= 5V 70
ns 3,4
V
CC
= 2.0V 800
CLK to Data Delay t
CDD
V
CC
= 5V 200
ns 3,4,5
V
CC
= 2.0V 1000
CLK Low Time t
CL
V
CC
= 5V 250
ns 4
V
CC
= 2.0V 1000
CLK High Time t
CH
V
CC
= 5V 250
ns 4
V
CC
= 2.0V 0.6
CLK Frequency t
CLK
V
CC
= 5V DC 2.0
MHz 4
V
CC
= 2.0V 2000
CLK Rise and Fall t
R,
t
F
V
CC
= 5V 500
ns
V
CC
= 2.0V 4
CE to CLK Setup t
CC
V
CC
= 5V 1
µs4
V
CC
= 2.0V 240
CLK to CE Hold t
CCH
V
CC
= 5V 60
ns 4
V
CC
= 2.0V 4
CE Inactive Time t
CWH
V
CC
= 5V 1
µs4
V
CC
= 2.0V 280
CE to Output High-Z t
CDZ
V
CC
= 5V 70
ns 3,4
V
CC
= 2.0V 280
SCLK to Output High-Z t
CCZ
V
CC
= 5V 70
ns 3,4
*Unless otherwise specified.
Figure 10. TIMING DIAGRAM: 3-WIRE READ DATA TRANSFER
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