參數(shù)資料
型號(hào): MC33972DWB
廠商: MOTOROLA INC
元件分類: 其它接口
英文描述: Multiple Switch Detection Interface with Suppressed Wake-Up
中文描述: SPECIALTY INTERFACE CIRCUIT, PDSO32
封裝: PLASTIC, SOIC-32
文件頁(yè)數(shù): 8/28頁(yè)
文件大小: 506K
代理商: MC33972DWB
33972
8
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
Timing Diagrams
Figure 2. SPI Timing Characteristics
Figure 3. Sleep Mode to Normal Mode Operation
Figure 4. Normal Mode Interrupt Operation
t
SO(DIS)
0.7 V
DD
0.2 V
DD
0.2 V
DD
0.7 V
DD
0.2 V
DD
t
LEAD
t
SO(EN)
t
SI(SU)
t
SI(HOLD)
t
VALID
t
LAG
CS
SCLK
SI
SO
MSB in
MSB out
LSB out
0.7 V
DD
0.2 V
DD
V
PWR
V
DD
WAKE
INT
CS
SGn
Power-Up
Normal Mode
Sleep
Command
Sleep Mode
Normal
Mode
Sleep Command
Sleep Mode
Normal
Mode
Sleep Command
Wake-Up From Interrupt
Timer Expire
Wake-Up From
Closed Switch
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
Status
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
Switch
Status
Command
Switch
Status
Command
Switch
Status
Command
Switch
Status
Command
Switch
Status
Command
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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