參數(shù)資料
型號(hào): MC33972
廠商: Motorola, Inc.
英文描述: Multiple Switch Detection Interface with Suppressed Wake-Up
中文描述: 多交換檢測(cè)接口,具有抑制喚醒
文件頁(yè)數(shù): 3/28頁(yè)
文件大小: 506K
代理商: MC33972
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33972
3
TERMINAL DEFINITIONS
A functional description of each terminal can be found in the System/Application Information section beginning on
page 9
.
Terminal
Terminal
Name
Formal Name
Definition
1
GND
Ground
Ground for logic, analog, and switch to battery inputs.
2
SI
SPI Slave In
SPI control data input terminal from MCU to 33972.
3
SCLK
Serial Clock
SPI control clock input terminal.
4
CS
Chip Select
SPI control chip select input terminal from MCU to 33972. Logic [0} allows data to be
transferred in.
5–8
25–28
SP0–3
SP4–7
Programmable Switches 0–7
Programmable switch-to-battery or switch-to-ground input terminals.
9–15,
18–24
SG0–6,
SG13–7
Switch-to-Ground Inputs 0–13
Switch-to-ground input terminals.
16
V
PWR
Battery Input
Battery supply input terminal. Terminal requires external reverse battery protection.
17
WAKE
Wake-Up
Open drain wake-up output. Designed to control a power supply enable terminal.
29
INT
Interrupt
Open-drain output to MCU. Used to indicate input switch change of state.
30
AMUX
Analog Multiplex Output
Analog multiplex output.
31
V
DD
Voltage Drain Supply
3.3/5.0 V supply. Sets SPI communication level for SO driver.
32
SO
SPI Slave Out
Provides digital data from 33972 to MCU.
SO
V
DD
AMUX
1
2
SP7
SP6
SP5
SP4
SG7
SG8
SG9
SG10
SG11
SG12
SG13
WAKE
INT
GND
SP0
SP1
SP2
SP3
SG0
SG1
SG2
SG3
SG4
SG5
SG6
V
PWR
CS
SI
SCLK
8
9
10
11
12
13
14
15
16
3
4
5
6
7
32
31
25
24
23
22
21
20
19
18
17
30
29
28
27
26
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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PDF描述
MC33972DWB Multiple Switch Detection Interface with Suppressed Wake-Up
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