Weltrend | Products

BLDC motor drivers and controllers

WT51FM24

WT51FM24 is an 8-bit BLDC motor controller series product. It uses an 8-bit 8052 core with an operating frequency of up to 24MHz, a Flash memory of up to 16K bytes, an SRAM of up to 512 bytes, and a wealth of peripherals and interfaces. WT51FM24 can operate in 12V sensor-less BLDC motor applications and has built-in 12V to 5V LDO, BEMF detection circuit and 26V NN structure gate driver. The green package uses QFN24, which is suitable for single-phase/three-phase BLDC motor systems.

Features

- 1T 8052 core, MCS-51 instruction set compatible
- Instruction execution time: Min. = 41.67ns @24 MHz
- 512 Bytes of RAM
- 16K Bytes of flash memory for program storage
- Supporting Internal Clock Oscillators: 24 MHz and 32 KHz RC oscillator
- Dual 16-bit Data Pointers (DPTR0 & DPTR1)
- Three 16-bit Timer/Counters (Timer0, Timer1, Timer2)
- One PWMIN Duty Capture 16-bit Timer/Counters
- One Hall/BEMF Capture 16-bit Timer/Counters
- Built-in Gate Driver Unit for Single/Three Phase Motor Control
- Built-in Sensorless BEMF Detection Circuit
- Built-in Over Current Detection Circuit
- Built-in 16*16 Hardware Multiplier & Right shift 16-bits
- One Watchdog Timer (WDT)
- One Watch Timer
- One UART (UART0), supports baud rate 2400bps ~ 460800bps (at 24 MHz)
- Emulated E2PROM
- One master/slave I2C interface
- 16-channel 10-bit Analog/Digital Converter (ADC0 ~ADC15)
- 7 external Interrupt IRQ pins (IRQ0~IRQ4 & IRQ6~7)
- 8 programmable bi-directional I/O pins
- Low Voltage Detection Reset (LVDR) and under voltage lock out (UVLO)
- On-chip Power On Reset (POR) and Low Voltage Reset (LVR)
- Built-in single-wire In-Circuit Emulator (ICE) and In-System Program (ISP)
- Read Out Protection
- Operating voltage range VBB = VIN: 6V ~ 26V
- Operating temperature: - 40℃ ~ +105℃
- Green Package: QFN-24L (4mm x 4mm)

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