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SI4707-B20 Datasheet, PDF (9/30 Pages) Silicon Laboratories – WEATHER BAND AND SAME DATA RECEIVER | |||
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Si4707-B20
Table 6. 3-Wire Control Interface Characteristics
(VDD = 2.7 to 5.5 V, VIO = 1.5 to 3.6 V, TA = â20 to 85 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max Unit
SCLK Frequency
fCLK
0
â
2.5
MHz
SCLK High Time
tHIGH
25
â
â
ns
SCLK Low Time
tLOW
25
â
â
ns
SDIO Input, SEN to SCLKïï Setup
tS
20
â
â
ns
SDIO Input to SCLKïï Hold
SEN Input to SCLKï¯ï Hold
tHSDIO
tHSEN
10
â
â
ns
10
â
â
ns
SCLKïï to SDIO Output Valid
tCDV
Read
2
â
25
ns
SCLKïï to SDIO Output High Z
tCDZ
Read
2
â
25
ns
SCLK, SEN, SDIO, Rise/Fall Time tR, tF
â
â
10
ns
Note: When selecting 3-wire mode, the user must ensure that a rising edge of SCLK does not occur within 300 ns before the
rising edge of RST.
SCLK 70%
30%
SEN 70%
30%
tR
tF
tS
tHSDIO
tHIGH
tLOW
tS
tHSEN
SDIO 70%
30%
A6-A5,
A7
R/W,
A0
A4-A1
D15
D14-D1
D0
Address In
Data In
Figure 4. 3-Wire Control Interface Write Timing Parameters
SCLK 70%
30%
tS
SEN 70%
30%
tHSDIO
tS
tCDV
tHSEN
tCDZ
70%
SDIO
30%
A6-A5,
A7
R/W,
A0
A4-A1
D15
D14-D1
D0
Address In
½ Cycle Bus
Turnaround
Data Out
Figure 5. 3-Wire Control Interface Read Timing Parameters
Rev. 0.8
9
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