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參數(shù)資料
| 型號(hào)： | ST52T301P |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8-Bit OTP/EPROM DuaLogic] MCUs WITH ADC, UART, TIMER, TRIAC & PWM DRIVER |
| 中文描述： | 8位檢察官辦公室/存儲(chǔ)器DuaLogic]與藝術(shù)發(fā)展局和UART，定時(shí)器，可控硅控制器 |
| 文件頁數(shù)： | 49/100頁 |
| 文件大?。?/td> | 497K |
| 代理商： | ST52T301P |
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Normallythe Triac firing pulsesstart 1/3 Tp before
thezerocrossingandthelengthof thepulsesisTp,
see Figure10.5.
The length Tp of the pulses is programmable by
usingUTPvalue,thatis a14-bitsnumber,obtained
with REG_CONF12(5:0) bits, UTPMSB, and
REG_CONF13, UTPLSB (see figure 10.12 and
table10.6):
UTP(13:0) = [UTPMSB(5:0)UTPLSB(7:0)]
T
P
= T
MCLK
* UTP
The value Tp is in the range 0 to 4.9 ms when the
clock master is 20 MHz.
According to REG_CONF11(0) configuration
register bit, POL, it is possible to set the firing
(1)
(0.5)
0
0.5
1
Ig
Tp
Negative
Triac Gate
Current
2/3 Tp
1/3 Tp
Positive
Triac Gate
Current
Power
Line
Ig
II and III quadrants
I and IV quadrants
Figure10.5.Burst Mode pulse polarity
Figure10.6 BurstMode ZeroCrossingCircuit
MAIN1
MAIN2
-1.5
-1
-0.5
0
0.5
1
1.5
MainVoltage
TRIACOUT
Tp
Tp
Tp
T
MASK
T
MASK
Figure10.7 BurstMode Zero Crossing
MCLK
Frequency
T
P
min
max
5 MHz
10 MHz
20 MHz
0.0012 ms
0.0006 ms
0.0003 ms
19.6608 ms
9.8304 ms
4.9152 ms
pulses polarity; in order to obtain positive or
negative gate Triac currents, allowing to work
respectively in I and IV quadrants,or in the II and
III quadrants(seeFigures 10.5 and 10.12).
To increase the immunity of the peripheralagainst
the electrical noise of the main voltage, a
programmable masking time, by using
REG_CONF11(5:2)bits, TCMSK (see Table 10.5)
49/99
ST52T301/E301
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