參數(shù)資料
型號(hào): MC33884DWR2
廠商: MOTOROLA INC
元件分類: 其它接口
英文描述: SWITCH MONITOR INTERFACE
中文描述: SPECIALTY INTERFACE CIRCUIT, PDSO24
封裝: SOIC-24
文件頁(yè)數(shù): 13/21頁(yè)
文件大小: 235K
代理商: MC33884DWR2
13
MOTOROLA TSG IC DEVICE DATA
DESCRIPTION (Continued)
Run Command
The Run command gives access to all of the operating modes: Normal, Polling, and Polling + INT Timer. It allows
selection of
tWAIT and tWAKE, and configures the programmable input blocks. Bit 7 is currently unused. Note that the Run register values are
unknown after exiting the Sleep mode.
MSB
Bit
LSB
Bit
Command
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Run
0
0
0
1
MOD2
MOD1
ST3
ST2
ST1
WT2
WT1
CP4
CP3
CP2
CP1
RESET VALUES:
Run Register
U
U
U
U
U
U
U
U
U
U
U
U
U: Unknown value coming out of Sleep mode; must configure with Run command.
MOD[2:1] — Operating Mode
In the Run command, the two MOD bits place the device in one of three operating modes: Normal, Polling, and Polling + INT
Timer.
Bit Definitions for Run Command
COMMAND: Run (0001), with bits[12:1] as follows
MODE
MOD2
MOD1
ST[3:1]
WT[2:1]
CP[4:1]
Undefined
0
0
XXX
XX
XXXX
Normal
0
1
XXX
XX
CP[4:1]
Polling
1
0
ST[3:1]
XX
CP[4:1]
Polling + INT Timer
1
1
ST[3:1]
WT[2:1]
CP[4:1]
ST[3:1] — OFF Time between Samples (tWAIT)
During both Polling modes (with and without INT Timer ’Wake–Up’, MOD2=[1]), these bits select the interval of time (tWAIT) that
the Input Blocks are turned OFF; switch transitions are not detected during the OFF interval.
Sample OFF Time Prescales
ST[3:1]
Multiplier
Selected
OFF Time, tWAIT (ms)
[tDETECT (4.8ms typ.) * Multiplier]
15 – 25
ON Time (ms)
000
5
5.1 – 6.3
001
9
30 – 55
5.1 – 6.3
010
17
60 – 90
5.1 – 6.3
011
25
100 – 140
5.1 – 6.3
100
33
145 – 185
5.1 – 6.3
101
41
195 – 215
5.1 – 6.3
110
49
220 – 245
5.1 – 6.3
111
57
250 – 320
5.1 – 6.3
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