Single chip microcomputer STM32L151CCU6
KT2520K26000DCW28QAS import spot
MOSFET imported original FET
inductance
The paper feed operation of the LT2221 thermal printer core is done by a stepper motor inside the movement. The drive circuit consists of the A3967 stepper motor driver chip. The A3967 is a fully stepper motor driver chip with embedded logic conversion. The interface signals of the drive circuit are described in the following table. When the rising edge of the input signal of the STEP of the motor drive chip comes, the motor will rotate one step. LT2221 stepper motor drive circuit:
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