PU6865Q
- Description
- The high-performance motor drive chip incorporates ME core and 8051 core. ME core integrates FOC, MDU,LPF, PID and SVPWM modules that allow for automatic calculation of FOC or square-wave control by the hardware for sensored/sensorless BLDC/PMSM motors. 8051 core is used for parameter configuration and routine processing. Most of 8051 core instruction cycle takes 1T or 2T clock cycle(s). The dual cores work in parallel to
achieve high-performance motor control. The chip integrates high-speed operational amplifiers, comparators,PWM (PU6815L), pre-driver (PU6865Q/PU6864Q/PU6864L), high-speed ADC, CRC, SPI, I2C, UART, Timers,built-in high-voltage LDO, which are suitable for FOC or square-wave based BLDC/PMSM motors.The above are the general descriptions on the product family. The features vary by models. For details, see sections 2 Pin Definitions and 4 Ordering Information.For concise description and easy differentiation, if it is specified that a feature is applied to a specific model,the feature is exclusive to this model. For example, PU6864 refers to all models of PU6864. Otherwise, the feature is a common feature of the product family.
PU6815 includes PU6815L(LQFP48)
PU6865 includes PU6865Q(QFN56)
PU6864 includes PU6864Q(QFN48-38) and PU6864L(LQFP52)
- Features
-
◼ Power supply of PU6815L/PU6865Q:
➢ 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 PU6865Q is supplied by external power supply.
◼ Power supply of PU6864Q/PU6864L:
➢ Single-power supply mode: When VCC_MODE = 0, external power supply 12V~20V is
connected to VCC pin, and internal LDO supplies VDD5 voltage.
◼ 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:
➢ PU6815L: 38
➢ PU6865Q: 36
➢ PU6864Q: 22
➢ PU6864L: 24
◼ Timers:
➢ Timer1: Timer supporting square-wave drive timing control, automatic commutation, cycle-bycycle 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 (PU6815L/PU6865Q),
tailwind/headwind detection (PU6815L/PU6865Q), 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 (PU6815L/PU6865Q)
➢ 1*I2C
➢ 2*UARTs, supporting single-wire mode (PU6815L/PU6865Q)
➢ 1*UART, supporting single-wire mode (PU6864Q/PU6864L)
➢ Dual-channel DMA: supporting data transmission via I
2C/SPI/UART (PU6815L/PU6865Q)
➢ Dual-channel DMA: supporting data transmission via I
2C/UART (PU6864Q/PU6864L)
◼ Analog peripherals:
➢ 12-bit ADC, operating with 1μs conversion time and internal VREF or external VREF selectable
as reference voltage
➢ Number of ADC channels:
◆ 14 (PU6815L/PU6865Q)
◆ 12 (PU6864Q)
◆ 13 (PU6864L. Among them, AD0 is the internal channel.)
➢ 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: Single-channel 9-bit, single-channel 8-bit, single-channel 6-bit
◼ Driver Type
➢ PWM output (PU6815L)
➢ Built-in MOSFET driver: 6N pre-driver output (PU6865Q/PU6864Q/PU6864L)
◼ FOC module supports single/dual/triple-shunt current sampling
◼ PFC
◼ System clock
➢ Built-in 24MHz high-speed RC oscillator
➢ Built-in 32.8kHz low-speed RC oscillator
➢ External 32768Hz crystal clock (PU6815L/PU6865Q)
◼ WDT
◼ LVD
◼ TSD
◼ Two-wire FICE protocol based in-circuit emulation
- Package
-
QFN56
- Datasheet
-
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