Thermal Printer HT32F1654 Characteristics ► MCU – HT32F1654 32-bit ARM® CortexTM-M3 processor core Up to 72MHz operation frequency 64KB on-chip flash memory and 16 KB on-chip SRAM Up to 51 GPIOs 12-bit, 1Msps SAR ADC, up to 12 multiplexed channels Rich communication interface : I2C, SPI, UART and USB ► Thermal Printer Easy-to-use installer & utility High-density 8 dots/mm print head Maximum speed of 70 mm/s 48mm print width and 58 mm paper width Out-of-paper sensor and thermistor for detecting abnormal print temperature Serial and USB interfaces Applications 2015 Holtek New Product Presentation A01 Block Diagram 9V Adapter 9V AP4435GM Power Switch 9V I/O 3.3V HT1117-33 LDO KEY GT21L16S2W Font Chip PWM I/O SPI MCU ADC HT32F1654 I/O CortexTM-M3 XTAL 64KB Flash UART 16KB SRAM HT1585 RTC I2C Thermal Printer Head USB 72MHz XTAL DRV8833 Motor Driver I2C USB Port MAX232 RS232 Transceiver CH455 LED Driver Connect I/O LED 2015 Holtek New Product Presentation A01