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| FMS7401 Datasheet, PDF (39/80 Pages) Fairchild Semiconductor – Digital Power Controller | |||
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PRODUCT SPECIFICATION
FT1CLK
Clock
Fin
Fout
DIVIDER
PS2 PS1 PS0
PSCALE
Figure 11. Timer 1âs PWM Mode Block Diagram
ENDAS
T1CMPB
[11:0]
T1CMPA
[11:0]
TMR1=T1CMPA
TMR1=T1CMPB
12
[11:0]
TMR1
12
[11:0]
T1RA
T1PND
PWMOFF
T1BOUT
2
Dead Time
Control
1
5
DT[4:0]
DTIME
1 50
PORTGD
FMS7401/7401L
ADSTROBE
G1/AIN3
T1HS2/G5
T1HS1/G0
Figure 12. Example PWM Output Signals a) and b)
a)
T1HS1
T1HS2
TDT
b)
0xFFF
T1RA
TDT
TDT
TPWM
T1CMPB
T1CMPA
0x00
T1HS1
T1HS2
ADSTROBE
ADC
Block
TDT
TDT
TDT
TDT
Sample
&
Hold
TSMP
ADC
Conversion
TCONV
Sample
ADC
&
Hold
Conversion
Sample
ADC
&
Hold
Conversion
Sample
ADC
&
Hold
Conversion
REV. 1.0.2 6/23/04
39
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