ST7MC2M9 STMicroelectronics, ST7MC2M9 Datasheet - Page 154

• Manufacturer Part Number: ST7MC2M9
• Description: 8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC,BRUSHLESS MOTOR CONTROL, 5 TIMERS, SPI, LINSCI(TM)
• Manufacturer: STMicroelectronics

Specifications of ST7MC2M9

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators and by-pass for external clock, clock security system.
• Four Power Saving Modes: Halt, Active-Halt, Wait and Slow
• Main Clock Controller With: Real time base, Beep and Clock-out capabilities
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input, PWM and pulse generator modes
• 8-bit Pwm Auto-reload Timer With: 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector

ST7MC1xx/ST7MC2xx
MOTOR CONTROLLER (Cont’d)
Table 31. Demagnetisation (D) Event Generation (example for ZVD=0)
154/309
1
(*) Note: This is a zoom to the additional voltage induced by the rotor (Back EMF)
HDM
bit
0
1
Hardware/Simulat-
(SDM bit = 1 and
Simulated Mode
(SDM bit =1 and
HDM bit = 0)
HDM bit = 1)
Meaning
ed Mode
HVV
HV/2
HV
HV/2
D
motor parasite or first
motor parasite or first
0V
0V
H
Undershoot due to
Undershoot due to
(Hardware detection or Output compare true)
sampling
sampling
Σ
Σ
2
2
D
D
S
S
D = D
Z
Z
D = D
CPB bit = 1
C
C
S
(*)
(*)
H
H
= Output Compare [MDREG, MTIM registers]
H
+ D
HV
HV/2
HV
HV/2
0V
0V
S
undershoot and
undershoot and
BEMF positive
BEMF positive
Weak / null
Weak / null
Z
Z
Σ
Σ
2
2
D
D
S
S
C
C
(*)
(*)
H
H
HVV
HV/2
(Hardware detection only)
HV
HV/2
D
0V
0V
H
CPB bit = 0
Z
Z
D = D
Σ
Σ
5
5
C
C
D
H
H
S
H
(*)
(*)