參數(shù)資料
型號: ST52440F2
英文描述: MAX 7000 CPLD 64 MC 100-TQFP
中文描述: 8位重癥監(jiān)護病房與定時器/脈寬調(diào)制。模擬比較器??煽毓? PWM定時器。水分散粒劑。提供了8K存儲器
文件頁數(shù): 44/88頁
文件大?。?/td> 1162K
代理商: ST52440F2
ST52T430/E430
49/88
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
Timeout Values (ms)
0
D (3:0)
0000
0.1
0001
62.5
0010
125
0011
187.5
1
0100
250
0101
312.5
0110
375
0111
437.5
2
1000
500
1001
562.5
1010
625
1011
687.5
3
1100
750
1101
812.5
1110
875
1111
937.5
4-7
NC
x
Not Used
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
相關(guān)PDF資料
PDF描述
ST52440F3 MAX 7000 CPLD 64 MC 44-TQFP
ST52440G2 MAX 7000 CPLD 64 MC 44-TQFP
ST52440G3 MAX 7000 CPLD 64 MC 44-TQFP
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