Definition:
RPWM: Right Turn PWM
LPWM: Left Turn PWM
R_EN: Right Turn Enable (High Active)
L_EN: Left Turn Enable (High Active)
R_IS: Right Turn Current Warning (May Leave Floating)
L_IS: Left Turn Current Warning (May Leave Floating)
VCC: (5V)
GND

Connections:
Method 1:
VCC: 5V from Microcontroller(MCU)
GND: GND from Microcontroller(MCU)
L_PWM: PWM or 5V from Microcontroller(MCU) for CCW(CW) Turns
R_PWM: PWM or 5V from Microcontroller(MCU) for CW(CCW) Turns
R_EN and L_EN: 5V from Microcontroller(MCU)

Method 2:
VCC: 5V from Microcontroller(MCU)
GND: GND from Microcontroller(MCU)
L_PWM: 5V from Microcontroller(MCU) for CCW(CW) Turns
R_PWM: 5V from Microcontroller(MCU) for CW(CCW) Turns
R_EN and L_EN: PWM from Microcontroller(MCU)

Just need four lines from MCU to driver module (GND. 5V. PWM1. PWM2);
isolation chip 5V power supply (can share with MCU 5V);
Able to reverse the motor forward, two PWM input frequency up to 25kHZ;
two heat flow passing through an error signal output;
isolated chip 5V power supply (can be shared with the MCU 5V), can also use the on-board 5V supply;
the supply voltage 5.5V to 27V;

Package include:
4 x BTS7960 motor driver module