DS1305
TIMING DIAGRAM: 3-WIRE WRITE DATA TRANSFER Figure 13
SPI AC ELECTRICAL CHARACTERISTICS
(0°C to 70°C or -40°C to +85°C; VCC = 2.0 to 5.5V*)
PARAMETER
SYMBOL
VCC=2.0V
MIN
TYP
MAX
UNITS NOTES
Data to CLK Setup
tDC
tCDH
tCDD
tCL
200
50
ns
ns
5,6
5,6
5,6,7
6
VCC=5V
VCC=2.0V
VCC=5V
CLK to Data Hold
CLK to Data Delay
CLK Low Time
280
70
VCC=2.0V
VCC=5V
800
200
ns
VCC=2.0V
VCC=5V
1000
250
ns
CLK High Time
tCH
VCC=2.0V
VCC=5V
1000
250
ns
6
CLK Frequency
tCLK
tR, tF
tCC
VCC=2.0V
VCC=5V
0.6
2.0
MHz
ns
6
DC
CLK Rise and Fall
CE to CLK Setup
CLK to CE Hold
VCC=2.0V
VCC=5V
2000
500
VCC=2.0V
VCC=5V
4
1
µs
6
6
tCCH
tCWH
tCDZ
VCC=2.0V
VCC=5V
240
60
4
ns
CE Inactive Time
CE to Output High Z
* Unless otherwise noted.
VCC=2.0V
VCC=5V
µs
6
1
VCC=2.0V
VCC=5V
280
70
ns
5,6
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DALLAS [ DALLAS SEMICONDUCTOR ]
