Holtek HT32F52220 User Manual page 10

32-Bit Arm ® Cortex ® -M0+ MCU
HT32F52220/HT32F52230
SPI Serial Frame Format .............................................................................................................. 309
Status Flags .................................................................................................................................. 313
Register Map ..................................................................................................................... 315
Register Descriptions ......................................................................................................... 316
SPI Control Register 0 - SPICR0 ................................................................................................. 316
SPI Control Register 1 - SPICR1 ................................................................................................. 317
SPI Interrupt Enable Register - SPIIER ....................................................................................... 319
SPI Clock Prescaler Register - SPICPR ...................................................................................... 320
SPI Data Register - SPIDR .......................................................................................................... 321
SPI Status Register - SPISR ........................................................................................................ 321
SPI FIFO Control Register - SPIFCR ........................................................................................... 323
SPI FIFO Status Register - SPIFSR ............................................................................................ 324
SPI FIFO Time Out Counter Register - SPIFTOCR ..................................................................... 325
19 Universal Synchronous Asynchronous Receiver Transmitter (USART) ..... 326
Introduction ........................................................................................................................ 326
Features ............................................................................................................................. 327
Function Descriptions ........................................................................................................ 328
Serial Data Format ........................................................................................................................ 328
Baud Rate Generation .................................................................................................................. 329
Hardware Flow Control ................................................................................................................. 331
IrDA ............................................................................................................................................... 332
RS485 Mode ................................................................................................................................. 335
Synchronous Master Mode ........................................................................................................... 338
Interrupts and Status .................................................................................................................... 340
Register Map ..................................................................................................................... 340
Register Descriptions ......................................................................................................... 341
USART Data Register - USRDR .................................................................................................. 341
USART Control Register - USRCR .............................................................................................. 342
USART FIFO Control Register - USRFCR................................................................................... 344
USART Interrupt Enable Register - USRIER ............................................................................... 345
USART Status & Interrupt Flag Register - USRSIFR................................................................... 346
USART Timing Parameter Register - USRTPR ........................................................................... 348
USART IrDA Control Register - IrDACR ...................................................................................... 349
USART RS485 Control Register - RS485CR............................................................................... 350
USART Synchronous Control Register - SYNCR ........................................................................ 351
USART Divider Latch Register - USRDLR................................................................................... 352
USART Test Register - USRTSTR ............................................................................................... 353
20 Universal Asynchronous Receiver Transmitter (UART) ................................ 354
Introduction ........................................................................................................................ 354
Features ............................................................................................................................. 355
Function Descriptions ........................................................................................................ 355
Serial Data Format ........................................................................................................................ 355
Rev. 1.10 10 of 366 November 09, 2018