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L9803 Datasheet(PDF) 98 Page - STMicroelectronics

No. de pieza L9803
Descripción Electrónicos  Super smart power motor driver with 8-Bit MCU, RAM, EEPROM, ADC, WDG, Timers, PWM and H-bridge driver
PDF  126 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9803 Datasheet(HTML) 98 Page - STMicroelectronics

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On-Chip Peripherals
L9803
98/126
Note:
The DIR signal is internally synchronized with the PWM1 and PWM2 signals according to
the selected Driving Mode. After writing the DIR bit in BCSR register, the direction changes
in correspondence with the first rising edge of PWM1. The same procedure is used in the
case of PWM2. This allows the proper control of the direction changes. When the PWM
signal is 0% or 100%, being no edges available, the DIR bit can’t be latched and the
direction does not change until a PWM edge occurs.
1
1
0
0
0
1
0
1
0
1
BRAKE
Full Bridge
1
1
0
1
0
1
1
0
0
1
FORWARD
Full Bridge
1
1
1
0
0
1
0
1
0
1
BRAKE
Full Bridge
1
1
1
1
0
1
0
1
1
0
BACK
Full Bridge
1
1
0
0
1
0
0
1
1
0
BACK
Full Bridge
1
1
0
1
1
0
1
0
0
1
FORWARD
Full Bridge
1
1
1
0
1
0
1
0
0
1
FORWARD
Full Bridge
1
1
1
1
1
0
0
1
1
0
BACK
Full Bridge
1
1
0
1
1
pwm1 pwm1 pwm2 pwm2
PWM1 ->left
PWM2->right
Two Half
Bridges
1
1
1
1
1
pwm1 pwm1 pwm2 pwm2
PWM1 ->left
PWM2->right
Two Half
Bridges
Table 14.
Functional Description Table (continued)
Drive EN PWM_EN DIR
PWM1 IN1 IN2
UL
DL
UR
DR
Operation Configuration



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