BD66FM6452A
BLDC Motor Flash MCU with Gate-Driver
BLDC Motor Control Circuit.............................................................................144
Functional Description...............................................................................................................144
PWM Counter Control Circuit....................................................................................................145
MASK Function .........................................................................................................................151
Other Functions.........................................................................................................................155
Hall Sensor Decoder.................................................................................................................157
Motor Protection Function.........................................................................................................165
I2C Interface.......................................................................................................171
I2C Interface Operation..............................................................................................................171
I2C Registers .............................................................................................................................173
I2C Bus Communication ............................................................................................................175
I2C Bus Start Signal...................................................................................................................176
I2C Slave Address .....................................................................................................................176
I2C Bus Read/Write Signal ........................................................................................................177
I2C Bus Slave Address Acknowledge Signal.............................................................................177
I2C Bus Data and Acknowledge Signal .....................................................................................177
I2C Time-out Control..................................................................................................................179
UART Interface..................................................................................................180
UART External Pins ..................................................................................................................181
UART Single Wire Mode...........................................................................................................181
UART Data Transfer Scheme....................................................................................................181
UART Status and Control Registers..........................................................................................182
Baud Rate Generator................................................................................................................189
UART Setup and Control...........................................................................................................190
UART Transmitter......................................................................................................................192
UART Receiver .........................................................................................................................193
Managing Receiver Errors ........................................................................................................195
UART Interrupt Structure...........................................................................................................195
UART Power Down and Wake-up.............................................................................................197
16-bit Multiplication Division Unit – MDU.......................................................198
MDU Registers..........................................................................................................................198
MDU Operation .........................................................................................................................199
Cyclic Redundancy Check – CRC...................................................................200
CRC Registers ..........................................................................................................................201
CRC Operation..........................................................................................................................201
Low Voltage Detector .......................................................................................203
LVD Register.............................................................................................................................203
LVD Operation...........................................................................................................................204
Interrupts...........................................................................................................204
Interrupt Registers.....................................................................................................................205
Interrupt Operation....................................................................................................................214
Hall Sensor Interrupts ...............................................................................................................214
External Interrupt.......................................................................................................................215
Noise Filter Input Interrupt.........................................................................................................215
Rev. 1.00
5
October 12, 2023
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