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33993 Datasheet(PDF) 8 Page - Freescale Semiconductor, Inc

Part # 33993
Description  Multiple Switch Detection Interface
PDF  28 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

33993 Datasheet(HTML) 8 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
8
Freescale Semiconductor
33993
ELECTRICAL CHARACTERISTICS
TIMING DIAGRAMS
TIMING DIAGRAMS
Figure 4. 33993 SPI Timing Characteristics
Figure 5. Sleep Mode to Normal Mode Operation
.
Figure 6. Normal Mode Interrupt Operation
tSO(dis)
0.7 VDD
0.2 VDD
0.2 VDD
0.7 VDD
0.2 VDD
tlead
tSO(en)
tSI(su)
tSI(hold)
tvalid
tlag
CS
SCLK
SI
SO
MSB in
MSB out
LSB out
0.7 VDD
0.2 VDD
VPWR
VDD
WAKE
INT
CS
SGn
Power-Up
Sleep
Sleep Mode
Normal
Mode
Sleep Command
Sleep Mode
Normal
Mode
Sleep Command
Wake-Up From Interrupt
Timer Expire
Wake-Up From
Closed Switch
Command
Normal Mode
Tri-State
Command
(Disable Tri-State)
INT
CS
SGn
Switch open “0”
1
SGn Bit in SPI Word
Switch closed “1”
1
0
0
1
Switch
Command
0
on falling edge of CS
Latch switch status
Switch state change with
CS
low generates INT
Switch state change with
CS
low generates INT
Rising edge of CS does not
clear INT because state change
occurred while CS was low
Status
Switch
Command
Status
Switch
Command
Status
Switch
Command
Status
Switch
Command
Status
Switch
Command
Status



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