参数资料
型号: KIT33972AEWEVBE
厂商: Freescale Semiconductor
文件页数: 10/32页
文件大小: 0K
描述: KIT EVALUATION FOR MC33972
标准包装: 1
主要目的: 接口,开关探测
嵌入式:
已用 IC / 零件: MC33972
主要属性: 8 可编程输入(电池开关或接地开关)
次要属性: 14 开关至接地输入
已供物品: 板,CD
Analog Integrated Circuit Device Data
18
Freescale Semiconductor
33972
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
RESET
The reset command resets all registers to Power-ON
Reset (POR) state. Refer to Table 15, page 18, for POR
states or the paragraph entitled Power-ON Reset (POR) on
page 14 of this datasheet.
SPI COMMAND SUMMARY
Table 15 below provides a comprehensive list of SPI
commands recognized by the 33972 and the reset state of
each register. Table 16 and Table 17 contain the serial
output (SO) data for input voltages greater or less than the
threshold level. Open switches are always indicated with a
logic [0], closed switches are indicated with logic [1].
Table 14. Reset Command
Reset Command
Command Bits
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
X
Table 15. SPI Command Summary
MSB
Command Bits
Setting Bits
LSBI
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Switch Status
Command
0
X
Settings Command
Bat=1, Gnd=0
(Default state = 1)
0
1
X
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
Wake-Up/Interrupt Bit
Wake-Up=1
Non-Wake-Up=0
(Default state = 1)
0
1
0
X
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
0
1
X
SG13 SG12 SG11 SG10 SG9 SG8 SG7 SG6
SG5
SG4 SG3 SG2 SG1 SG0
Metallic Command
Metallic = 1
Non-metallic = 0
(Default state = 1)
0
1
0
X
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
0
1
0
1
X
SG13 SG12 SG11 SG10 SG9 SG8 SG7 SG6
SG5
SG4 SG3 SG2 SG1 SG0
Analog Command
0
1
0
X
16mA
0
2.0mA
0
Wetting Current Timer
Enable Command
Timer ON = 1
Timer OFF = 0
(Default state = 1)
0
1
X
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
0
1
0
X
SG13 SG12 SG11 SG10 SG9 SG8 SG7 SG6
SG5
SG4 SG3 SG2 SG1 SG0
Tri-State Command
Input Tri-State=1
Input Active = 0
(Default state = 1)
0
1
0
1
X
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
0
1
0
1
0
X
SG13 SG12 SG11 SG10 SG9 SG8 SG7 SG6
SG5
SG4 SG3 SG2 SG1 SG0
Calibration Command
(Default state –
uncalibrated)
0
1
0
1
X
Sleep Command
(Refer to Sleep Mode
0
1
0
X
int
timer
int
timer
int
timer
scan
timer
scan
timer
scan
timer
Reset Command
0
1
X
SO Response Will
Always Send
them
flg
int
flg
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0 SG13 SG12 SG11 SG10 SG9 SG8 SG7 SG6
SG5
SG4 SG3 SG2 SG1 SG0
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