ST92141 STMicroelectronics, ST92141 Datasheet - Page 127

• Manufacturer Part Number: ST92141
• Description: 8/16-bit Mcu For 3-phase Ac Motor Control
• Manufacturer: STMicroelectronics

INDUCTION MOTOR CONTROLLER (Cont’d)
TACHO
(TPRSH)
R244 - Read/Write
Register Page: 51
Reset Value: 0000 0000 (00h)
Bit 7:4 = Reserved.
Bit 3:0 = TPRH[3:0] Most Significant Bits of tacho
prescaler value (N).
TACHO PRESCALER REGISTER LOW (TPRSL)
R245 - Read/Write
Register Page: 51
Reset Value: 0000 0000 (00h)
Bit 7:0 = TPRL[7:0] Low byte of tacho prescaler
value (N).
If N = 0 Tacho Prescaler divides by 1.
TPRL
7
7
7
-
TPRL
6
-
PRESCALER
TPRL
5
-
TPRL
4
-
TPRH
TPRL
3
3
REGISTER
ST92141 - 3-PHASE INDUCTION MOTOR CONTROLLER (IMC)
TPRH
TPRL
2
2
TPRH
TPRL
1
1
TPRH
TPRL
HIGH
0
0
0
0
PWM
(CPRS)
R246 - Read/Write
Register Page: 51
Reset Value: 0000 0000 (00h)
Bit 7:0 = CPR[7:0] PWM counter prescaler value
(N) .
This value divides the INTCLK frequency by (N
+1), i.e. if N = 0, INTCLK is divided by 1.
REPETITION COUNTER REGISTER (REP)
R247 - Read/Write
Register Page: 51
Reset Value: 0000 0000 (00h)
Bit 7:0 = REP[7:0] Repetition counter value (N).
If N = 0, each time the PWM Counter reaches ze-
ro, the Compare registers are updated and an
ADT interrupt is generated.
CPR7 CPR6 CPR5 CPR4 CPR3 CPR2 CPR1 CPR0
REP7 REP6 REP5 REP4 REP3 REP2 REP1 REP0
7
7
COUNTER
PRESCALER
REGISTER
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0
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