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L9803 データシート(PDF) 99 Page - STMicroelectronics

部品番号 L9803
部品情報  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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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9803 データシート(HTML) 99 Page - STMicroelectronics

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L9803
On-Chip Peripherals
99/126
Figure 46.
Example - Power Bridge Waveform, PWM Up Brake Driving Mode
5.8.6
Register Description
The power section is controlled by the microcontroller through the following register:
POWER BRIDGE CONTROL STATUS REGISTER (PBCSR)
Address: 0021h - Read/Write
Reset Value: 00000000
Bit 0 = EN: Power Bridge enable. When reset the bridge is disabled and OUTL and OUTR
are in high impedance condition.
Bit 1= PWM_EN: PWM driving enable. When reset the bridge is driven directly by IN1 and
IN2 bit (Direct Mode). When set the driving is made by PWM1 and/or PWM2 bit according to
the Operation Mode selected by IN1 and IN2 bit.
Bit 2= IN1: Left Half Bridge control bit if PWM_EN=0, driving mode selection bit if
PWM_EN=1.
Bit 3= IN2: Right Half Bridge control bit if PWM_EN=0, driving mode selection bit if
PWM_EN=1.
PWM1
DIR
UL
DL
UR
DR
OUTL
OUTR
7
0
PIE
OVT
SC
DIR
IN2
IN1
PWM_EN
EN



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