Power supply of FU6865Q:
High-voltage single-power supply mode: When VCC_MODE = 0, external power supply 5V~28V is connected to VCC pin, and internal LDO supplies VDD5 voltage.
Low-voltage single-power supply mode: When VCC_MODE = 1, external power supply 3V~5.5V is connected to VDD5 pin, and VDD5 pin is shorted to VCC pin.
Dual-power supply mode: When VCC_MODE = 1, external power supply 1 (5V~36V) is connected to VCC pin, and external power supply 2 (5V) is connected to VDD5 pin.
Note: VDRV voltage of FU6865Q is supplied by external power supply.
Dual core: 8051 core and ME core
An instruction cycle mostly takes 1 or 2 system clock cycle(s)
32kB Flash ROM with CRC, self-program and code protection
256 bytes IRAM and 3.75k bytes XRAM
ME: Core integrating PID module, FOC module, MDU auxiliary computing module and LPF module
16 interrupt sources with 4 configurable priority levels
Number of GPIOs:
FU6865Q: 36
Timers:
Timer1: Timer supporting square-wave drive timing control, automatic commutation, cycle-by-cycle current limiting and Hall/BEMF-based position sensing
Timer2 : Timer supporting PWM output, measurement of duty cycle and period of input PWM wave, measurement of the time of set PWM wave numbers, QEP decoding, tailwind/headwind detection, and rotation direction and speed detection of step motor
Timer3/Timer4: Timers supporting PWM output, and measurement of duty cycle and period of input PWM wave. Timer4 supports FG generation and Timer3 supports up to 48MHz input
Systick Timer
RTC
Communication interfaces:
1*SPI
1*I2C
2*UARTs, supporting single-wire mode
Dual-channel DMA: supporting data transmission via I2C/SPI/UART
Analog peripherals:
12-bit ADC, operating with 1μs conversion time and internal VREF or external VREF selectable as reference voltage
Number of ADC channels:
- FU6865Q: 14
Internal VREF. 3V, 4V, 4.5V and VDD5 can be selected as the internal reference.
Internal VHALF, with VREF/2, 1/4 VREF, 1/8 VREF or 25/64 VREF as the internal reference
Four standalone operational amplifier(s), where PGA is configurable
Four-channel analog comparator
DAC channels: Single-channel 9-bit, single-channel 8-bit, single-channel 6-bit
Driver Type
FU6865Q: Built-in MOSFET driver with 6N pre-driver output
FOC module supports single/dual/triple-shunt current sampling
FU6815L: PFC
System clock
Built-in 24MHz high-speed RC oscillator
Built-in 32.8kHz low-speed RC oscillator
External 32768Hz crystal clock
WDT
LVD
TSD
Two-wire FICE protocol based in-circuit emulation
FU6865Q
