DS1305
SPI AC ELECTRICAL CHARACTERISTICS
(Over the operating range, unless otherwise specified.) (Figure 12 and Figure 13)
PARAMETER
Data to CLK Setup
SYMBOL
VCC = 2.0V
MIN
200
50
280
70
TYP
MAX UNITS NOTES
tDC
tCDH
tCDD
tCL
ns
5,6
VCC = 5V
VCC = 2.0V
CLK to Data Hold
CLK to Data Delay
CLK Low Time
ns
5,6
5,6,7
6
V
CC = 5V
VCC = 2.0V
VCC = 5V
VCC = 2.0V
800
200
ns
1000
250
ns
V
CC = 5V
VCC = 2.0V
VCC = 5V
VCC = 2.0V
1000
250
CLK High Time
CLK Frequency
tCH
ns
6
0.6
2.0
2000
500
tCLK
tR, tF
tCC
MHz
ns
6
V
CC = 5V
DC
VCC = 2.0V
VCC = 5V
VCC = 2.0V
CLK Rise and Fall
CE to CLK Setup
CLK to CE Hold
CE Inactive Time
CE to Output High-Z
4
1
240
60
4
µs
6
6
V
CC = 5V
VCC = 2.0V
VCC = 5V
VCC = 2.0V
tCCH
tCWH
tCDZ
ns
µs
6
V
CC = 5V
VCC = 2.0V
CC = 5V
1
280
70
ns
5,6
V
19 of 21
DALLAS [ DALLAS SEMICONDUCTOR ]
