Weltrend

Products

WT51FU16
/ WT51FU24

【 General Description 】

The WT51FU16/WT51FU24 is an 8-bit CISC architecture BLDC motor controller. It has16K x 8 embedded flash, 512 x 8 SRAM, 12V to 5V LDO power management, comparators for motor commutation sensor-less BEMF detection, smart fan communication interface, in-fan programming functions and so on built-in.

The WT51FU16/WT51FU24 can directly operate in 12V BLDC motor system without hall sensor. The WT51FU16 in a QFN16 package (4 mm x 4 mm) is suitable for single-phase BLDC motor application while the WT51FU24 in a QFN24 package (4 mm x 4 mm) is suitable for three-phase BLDC motor application.

【 Features 】
●	1T 8052 core, MCS-51 instruction set compatible
●	Instruction execution time: Min. = 41.67ns @24MHz
●	512 Bytes of RAM (256 Bytes of standard 8052 internal Data RAM + 256 Bytes of external RAM)
●	16K Bytes of flash memory for program storage
●	Supporting Internal Clock Oscillators:
	- 24 MHz RC oscillator
	- 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 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 24MHz)
●	Emulated E2PROM
●	One master/slave I2C interface
●	10-bit Analog/Digital Converter
●	14 external Interrupt IRQ pins (IRQ0 ~ IRQ4, IRQ6 ~ IRQ14)
●	15 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: 5V to 15V
●	Operating temperature: - 40℃ to +105℃
●	Package: QFN16 (4mmx4mm) for WT51FU16, QFN24 (4mmx4mm) for WT51FU24

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