L9805E datasheet(97/125 Pages) STMICROELECTRONICS

Part #	L9805E

Description	Super smart power motor driver with 8-Bit MCU, RAM, EEPROM, ADC, WDG, Timers, PWM and H-bridge driver

PDF	125 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

97 / 125 page

L9805E

On-chip peripherals

97/125

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 PBCSR 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.

BRAKE

Full Bridge

FORWARD

Full Bridge

BRAKE

Full Bridge

BACK

Full Bridge

BACK

Full Bridge

FORWARD

Full Bridge

FORWARD

Full Bridge

BACK

Full Bridge

pwm1 pwm1 pwm2 pwm2

PWM1 ->left

PWM2->right

Two Half

Bridges

pwm1 pwm1 pwm2 pwm2

PWM1 ->left

PWM2->right

Two Half

Bridges

Table 15.

Functional description (continued)

Drive EN PWM_EN DIR PWM1 IN1 IN2

Operation Configuration

L9805E Datasheet(PDF) 97 Page - STMicroelectronics