ST92141 STMicroelectronics, ST92141 Datasheet - Page 113
ST92141
Manufacturer Part Number
ST92141
Description
8/16-bit Mcu For 3-phase Ac Motor Control
Manufacturer
STMicroelectronics
Datasheet
1.ST92141.pdf
(179 pages)
- Current page: 113 of 179
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EXTENDED FUNCTION TIMER (Cont’d)
STATUS REGISTER (SR)
R254 - Read Only
Register Page: 28
Reset Value: 0000 0000 (00h)
The three least significant bits are not used.
Bit 7 = ICF1 Input Capture Flag 1.
0: No input capture (reset value).
1: An input capture has occurred. To clear this bit,
Bit 6 = OCF1 Output Compare Flag 1.
0: No match (reset value).
1: The content of the free running counter has
Bit 5 = TOF Timer Overflow.
0: No timer overflow (reset value).
1: The free running counter rolled over from FFFFh
Note: Reading or writing the ACLR register does
not clear TOF.
Bit 4 = ICF2 Input Capture Flag 2.
0: No input capture (reset value).
1: An input capture has occurred. To clear this bit,
Bit 3 = OCF2 Output Compare Flag 2.
0: No match (reset value).
1: The content of the free running counter has
Bit 2-0 = Reserved, forced by hardware to 0.
ICF1
first read the SR register, then read or write the
low byte of the IC1R (IC1LR) register.
matched the content of the OC1R register. To
clear this bit, first read the SR register, then read
or write the low byte of the OC1R (OC1LR) reg-
ister.
to 0000h. To clear this bit, first read the SR reg-
ister, then read or write the low byte of the CR
(CLR) register.
first read the SR register, then read or write the
low byte of the IC2R (IC2LR) register.
matched the content of the OC2R register. To
clear this bit, first read the SR register, then read
or write the low byte of the OC2R (OC2LR) reg-
ister.
7
OCF1
TOF
ICF2
OCF2
0
0
0
0
ST92141 - EXTENDED FUNCTION TIMER (EFT)
CONTROL REGISTER 3 (CR3)
R255 - Read/Write
Register Page: 28
Reset Value: 0000 0000 (00h)
Bit 7-4 = Unused Read as 0.
Bit 3 = TOIS Timer Overflow Interrupt Selection.
0: Select External interrupt.
1: Select Timer Overflow Interrupt.
Bit 2 = OCIS Output Compare Interrupt Selection.
0: Select External interrupt.
1: Select Timer Output Compare Interrupt.
Bit 1 = ICIS Input Capture Interrupt Selection.
0: Select External interrupt.
1: Select Timer Input Capture Interrupt.
Bit 0 = EFTIS Global Timer Interrupt Selection.
0: Select External interrupt.
1: Select Global Timer Interrupt.
7
0
0
0
0
TOIS
OCIS
ICIS
113/179
EFTIS
9
0
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