BS45F3235 24SSOP

70.55

The BS45F3235 is a Flash Memory A/D type 8-bit high performance RISC architecture microcontroller with integrated functions for Proximity Sensing applications. It is suitable for the related products of driving DC motors and electromagnetism valve, such as sanitary appliances, home appliances, security products.

The BS45F3235 integrates an active IR proximity sensing circuit and a low voltage motor driver, with which, the BS45F3235 can greatly reduces the number of external components. The transmitting power, receiving sensitivity and sensing distance can be controlled or adjusted by the application program.

The device has a built-in 1-channel H-bridge driver with a maximum motor peak current of 2.1A, which includes separate power supplies of controlling circuits and the motor power and a current sensing pin.

The H-bridge driver provides four control modes : Forward, Reverse, Brake and Standby / Sleep modes. The PWM input control frequency is up to 200kHz, which can provide accurate speed controlling. A full range of protection functions and an ultra-low 0.1μA sleep mode are also included.

NOTE
  1. The product image is for showing the product appearance, the pin count shown may not match the product pin count.
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Description

 

FEATURES
  1. Operating voltage : 2.2V~5.5V
  2. Up to 0.5μs instruction cycle with 8MHz system clock at VDD=5V
  3. Fully integrated internal oscillators require no external components
  4. Oscillator types :
    – Internal High Speed 8MHz RC – HIRC
    – Internal Low Speed 32kHz RC – LIRC
  5. Single 10-bit Standard Type Timer Module for time measurement, capture input, compare match output, PWM output or single pulse output function
  6. Universal Serial Interface Module – USIM for SPI, I2C or UART communication
  7. Proximity Sensing circuit
    – Two Operational Amplifiers
    – One Comparator
  8. Infrared LED constant-current driver with a driving current of up to 320mA
  9. Low Voltage Reset / Detect function
  10. 1 Channel H-Bridge motor driver: low MOSFET On-resistance: 0.5Ω (HS+LS)
PRODUCT SERIES
DEVELOPMENT TOOL
  1. Debug Adapter : e-Link
  2. Development Environment : HT-IDE3000
RESOURCES
  1. MCU : Holtek BS45F3235, Proximity Sensing Flash MCU, including datasheet, package dimension, etc.

 

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