参数资料
型号: ST72T141K2MAE
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDSO34
封装: 0.300 INCH, LEAD FREE, PLASTIC, SOP-34
文件页数: 79/131页
文件大小: 3096K
代理商: ST72T141K2MAE
ST72141K2-Auto
51/131
MOTOR CONTROLLER (Cont’d)
Table 15. Modes permitting BEMF reading after Demagnetization (D event)
SR bit
(Sensor/
Sensor-
less Mode)
Demagnet-
ization
V0C1 bit
(Voltage/
Current
Mode)
OS[2:0]
bits
(PWM
Output
Config.)
Significant
PWM
Group
REO bit
(Read
BEMF on
Even/Odd
group)
BEMF reading permitted after D event
when:
0
After D
event
1
x00
Even
0
Sensorless mode, Current Mode, PWM
output only on Even group and BEMF read
on Even group
x01
Odd
1
Sensorless mode, Current Mode, PWM
output only on Odd group and BEMF read
on Odd group
x10
Even
0
Sensorless mode, Current Mode, PWM
output on alternate groups but BEMF read
only on Even group
x10
Odd
1
Sensorless mode, Current Mode, PWM
output on alternate groups but BEMF read
only on Odd group
0
000
Even
0
Sensorless mode, Voltage Mode, PWM
output only on Even group and BEMF read
on Even group
001
Odd
1
Sensorless mode, Voltage Mode, PWM
output only on Odd group and BEMF read
on Odd group
100
Even
0
Sensorless mode, Voltage Mode, PWM
output only on Even group and BEMF
Read on Even group
101
Odd
1
Sensorless mode, Voltage Mode, PWM
output only on Odd group and BEMF Read
on Odd group
110
Even
0
Sensorless mode, Voltage Mode, PWM
output on alternate groups but BEMF read
only on Even group
110
Odd
1
Sensorless mode, Voltage Mode, PWM
output on alternate groups but BEMF read
on Odd group
x
x11
Even and
Odd
x
Sensorless mode, Current or Voltage
Mode, PWM output on both groups, BEMF
read on either group
1
Not Used
x
xxx
Odd or
Even
x
Sensor Mode, in any PWM output configu-
ration, BEMF read on either group
Other cases
BEMF reading forbidden
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