參數(shù)資料
型號: ST52X420
廠商: 意法半導體
元件分類: ADC
英文描述: 8-BIT INTELLIGENT CONTROLLER UNIT (ICU) Three Timer/PWMs, ADC, WDG
中文描述: 8位智能控制器病房(ICU)3個定時器/的PWM,ADC的,水分散粒劑
文件頁數(shù): 51/84頁
文件大?。?/td> 1274K
代理商: ST52X420
ST52T410/ST52T420/E420
51/84
9.2 Register Description
The WDT timeout is defined by setting the value of
the REG_CONF 2. The first 4 bits of this register
are used, obtaining 16 different delays as
illustrated in Table 9.2. In Table 9.2 timeout is
expressed by using the number of WDT CLK. The
WDT CLK is derived from the clock master by a
division factor of 500. Timeout is obtained by
multiplying the WDT CLK pulse length for the
number of pulses defined by the configuration
register REG_CONF 2. Table 9.4 illustrates the
pulse lengths for typical values of the clock master.
Table 9.3 illustrates the timeout WDT values when
the Master Clock is 5 MHz.
Table 9.2 WDT REG_CONF 2
Bit
Name
Value
Timeout Values (WDT)
0
D(3:0)
0000
1
0001
625
0010
1250
0011
1875
1
0100
2500
0101
3125
0110
3750
0111
4375
2
1000
5000
1001
5625
1010
6250
1011
6875
3
1100
7500
1101
8125
1110
8750
1111
9375
4-7
NC
x
Not Used
Reset Configuration
0000
Table 9.3 Timeout Values with CLK = 5 MHz
Bit
Name
Value
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
x
Timeout Values (ms)
0.1
62.5
125
187.5
250
312.5
375
437.5
500
562.5
625
687.5
750
812.5
875
937.5
Not Used
0
D (3:0)
1
2
3
4-7
NC
Reset Configuration
0000
Table 9.4 Typical WDT CLK Pulse Length
MASTER CLK
(MHz)
WDT CLK
(KHz)
WDT CLK
PULSE
LENGTH (ms)
4
8
0.125
5
10
0.1
8
16
0.0625
10
20
0.05
20
40
0.025
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