Simple symmetric-duty-time H-bridge with dead-time, ideal for cheap ATTinys as a substitution for the corresponding ASIC

h_bridge.ino

#define BRIDGE_A_PIN 3
#define BRIDGE_B_PIN 4
#define ON_TIME_US 2000
#define DEAD_TIME_US 100

void setup() {
  pinMode(BRIDGE_A_PIN, OUTPUT);
  digitalWrite(BRIDGE_A_PIN, LOW);
  pinMode(BRIDGE_B_PIN, OUTPUT);
  digitalWrite(BRIDGE_B_PIN, LOW);
}

void loop() {
  digitalWrite(BRIDGE_A_PIN, HIGH);
  delayMicroseconds(ON_TIME_US);
  digitalWrite(BRIDGE_A_PIN, LOW);
  delayMicroseconds(DEAD_TIME_US);
  digitalWrite(BRIDGE_B_PIN, HIGH);
  delayMicroseconds(ON_TIME_US);
  digitalWrite(BRIDGE_B_PIN, LOW);
  delayMicroseconds(DEAD_TIME_US);
}