参数资料
型号: ST72141K2B3/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32
封装: 0.400 INCH, PLASTIC, SDIP-32
文件页数: 77/133页
文件大小: 2615K
代理商: ST72141K2B3/XXX
Obsolete
Product(s)
- Obsolete
Product(s)
ST72141K2
48/133
MOTOR CONTROLLER (Cont’d)
Table 14. Demagnetisation (D) Event Generation (example for ZVD=0)
HDM
bit
Meaning
CPB bit = 1
(Even
Σ)
CPB bit = 0
(Odd
Σ)
0
Software Mode
(SDM bit =1 and
HDM bit = 0)
D = DS = Output Compare [MDREG, MTIM registers]
1
Hardware/Simulat-
ed Mode
(SDM bit = 1 and
HDM bit = 1)
D = DH + DS
(Hardware detection or Output compare true)
D = DH
(Hardware detection only)
(*) Note: This is a zoom to the additional voltage induced by the rotor (Back EMF)
Z
C
Σ2
HV
HV/2
0V
DS
Z
C
Σ2
HVV
HV/2
0V
DS
Undershoot due to
motor parasite or first
Weak / null
undershoot and
(*)
sampling
BEMF positive
DS
Z
Σ5
HVV
HV/2
0V
C
(*)
Z
C
Σ2
HV
HV/2
0V
Z
C
Σ2
HV
HV/2
0V
DS
Undershoot due to
motor parasite or first
Weak / null
undershoot and
(*)
DH
DS
sampling
BEMF positive
DH
Z
Σ5
HV
HV/2
0V
C
(*)
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