HT32F61244/HT32F61245

32-Bit Arm® Cortex®-M0+ Music Synthesizer MCU with Flash Data Memory

These devices are high performance, low power consumption 32-bit microcontrollers based around an Arm^® Cortex^®-M0+ processor core. The Cortex^®-M0+ is a next-generation processor core which is tightly coupled with Nested Vectored Interrupt Controller (NVIC), SysTick timer and including advanced debug support.

The devices operate at a frequency of up to 48 MHz with a Flash accelerator to obtain maximum efficiency. They provide up to 64 KB of embedded Flash memory for code/data storage and 8 KB of embedded SRAM memory for system operation and application program usage. A variety of peripherals, such as ADC, 2-channel DAC, I²C, UART, SPI, QSPI, GPTM, SCTM, BFTM, CRC- 16/32, LSTM, WDT, 16-channel music synthesizer, SW-DP (Serial Wire Debug Port), etc., are also implemented in the devices. Several power saving modes provide the flexibility for maximum optimization between wakeup latency and power consumption, an especially important consideration in low power applications.

The devices integrate Wave Table synthesis function. They can operate up to 16 channels of Wave Table synthesis at one time and control the MIDI Engine to generate melody by setting the special registers. The Wave Table synthesis waveform data including instrument tone, MIDI scores, voice, sound effect, etc., are stored in the internal SPI Flash Data Memory. With these features, the devices provide enhanced functions and higher performance.

The above features ensure that the devices are suitable for use in a wide range of applications, especially in areas such as electronic organs, digital pianos, electronic drums, electric guitars, electric accordions and so on.

Attribute	Value
Core	32-bit Arm® Cortex®-M0+ processor core Up to 48 MHz operating frequency Single-cycle multiplication Integrated Nested Vectored Interrupt Controller (NVIC) 24-bit SysTick timer
On-Chip Memory	Up to 64 KB on-chip Flash memory for instruction/data and options storage 8 KB on-chip SRAM Supports multiple booting modes
Flash Memory Controller – FMC	Flash accelerator to obtain maximum efficiency 32-bit word programming with In System Programming Interface (ISP) and In Application Programming (IAP) Flash protection capability to prevent illegal access

Reset Control Unit – RSTCU

Attribute	Value
Supply supervisor:	Power On Reset / Power Down Reset – POR/PDR Brown-Out Detector – BOD Programmable Low Voltage Detector – LVD

Attribute	Value
Clock Control Unit – CKCU	External 4 to 16 MHz crystal oscillator Internal 8 MHz RC oscillator trimmed to ±2 % accuracy at 3.3 V operating voltage and 25 °C operating temperature Internal 32 kHz RC oscillator Integrated system clock PLL Independent clock divider and gating bits for peripheral clock sources

Power Control Unit – PWRCU

Attribute	Value
Single VDD power supply	2.3 V to 3.6 V
Integrated 1.5 V LDO regulator for MCU core, peripherals and memories power supply	Available
VDD power supply for LSTM	Available
Two power domains	VDD, VCORE
Four power saving modes	Sleep, Deep-Sleep1, Deep-Sleep2, Power-Down

Attribute	Value
External Interrupt/Event Controller – EXTI	Up to 16 EXTI lines with configurable trigger source and type All GPIO pins can be selected as EXTI trigger source Source trigger type includes high level, low level, negative edge, positive edge or both edges Individual interrupt enable, wakeup enable and status bits for each EXTI line Software interrupt trigger mode for each EXTI line Integrated deglitch filter for short pulse blocking
Analog to Digital Converter – ADC	12-bit SAR ADC engine Up to 1 Msps conversion rate Up to 16 external analog input channels
I/O Ports – GPIO	Up to 49 GPIOs Port A, B, C, D are mapped as 16 external interrupts – EXTI Almost all I/O pins have a configurable output driving current.
General-Purpose Timer – GPTM	16-bit up, down, up/down auto-reload counter Up to 4 independent channels 16-bit programmable prescaler that allows division of the prescaler clock source by any factor between 1 and 65536 to generate the counter clock frequency Input Capture function Compare Match Output PWM waveform generation with Edge-aligned and Center-aligned Single Pulse Mode Output Encoder interface controller with two inputs using quadrature decoder
Single-Channel Timer – SCTM	16-bit up and auto-reload counter One channel for each timer 16-bit programmable prescaler that allows division of the prescaler clock source by any factor between 1 and 65536 to generate the counter clock frequency Input Capture function Compare Match Output PWM waveform generation with Edge-aligned
Basic Function Timer – BFTM	32-bit compare match count-up counter – no I/O control One shot mode – stops counting when compare match occurs Repetitive mode – restarts counter when compare match occurs
Digital to Analog Converter – DAC	Two 16-bit high resolution D/A converters with excellent frequency response characteristics and good power consumption for stereo audio output.
Music Synthesis Engine (MIDI Engine) – MSE	Up to 16 simultaneous sounds 10-bit Volume Control Output sampling frequency up to 50 kHz Waveform data lengths of 8, 12 or 16 bits Stereo output Supports Repeat loop Play Supports PDMA interface
Watchdog Timer – WDT	12-bit down counter with 3-bit prescaler Provides reset to the system Programmable watchdog timer window function Register write protection function
Low Speed Timer – LSTM	24-bit up-counter with a programmable prescaler Alarm function Interrupt and Wake-up event
Inter-Integrated Circuit – I²C	Supports both master and slave modes with a frequency of up to 1 MHz Provides an arbitration function and clock synchronization Supports 7-bit and 10-bit addressing modes and general call addressing Supports slave multi-addressing mode using address mask function

Serial Peripheral Interface – SPI

Attribute	Value
Supports both master and slave mode	Available
Frequency of up to (fPCLK/2) MHz for the master mode and (fPCLK/3) MHz for the slave mode	Available
FIFO Depth	8 levels
Multi-master and multi-slave operation	Available

Quad Serial Peripheral Interface – QSPI

Attribute	Value
Supports both master and slave modes	Available
Master mode speed up to fHCLK/2	Available
Slave mode speed up to fHCLK/3	Available
Programmable data frame length up to 16 bits	Available
FIFO Depth	8 levels
MSB or LSB first shift selection	Available
Programmable slave select high or low active polarity	Available
Multi-master and multi-slave operation	Available
Master mode supports the dual/quad output read mode of QSPI series NOR Flash	Available
Four error flags with individual interrupt	Read overrun Write collision Mode fault Slave abort
Supports PDMA interface	Available

Universal Asynchronous Receiver Transmitter – UART

Attribute	Value
Asynchronous serial communication operating baud rate clock frequency up to fPCLK/16 MHz	Available
Full duplex communication	Available
Fully programmable serial communication characteristics including:	Word length: 7, 8 or 9-bit character Parity: Even, odd or no-parity bit generation and detection Stop bit: 1 or 2 stop bit generation Bit order: LSB-first or MSB-first transfer
Error detection	Parity, overrun and frame error

Cyclic Redundancy Check – CRC

Attribute	Value
Supports CRC16 polynomial	0x8005, X¹⁶+X¹⁵+X²+1
Supports CCITT CRC16 polynomial	0x1021, X¹⁶+X¹²+X⁵+1
Supports IEEE-802.3 CRC32 polynomial	0x04C11DB7, X³²+X²⁶+X²³+X²²+X¹⁶+X¹²+X¹¹+X¹°+X⁸+X⁷+X⁵+X⁴+X²+X+1
Supports 1’s complement, byte reverse & bit reverse operation on data and checksum	Available
Supports byte, half-word & word data size	Available
Programmable CRC initial seed value	Available
CRC computation executed in 1 AHB clock cycle for 8-bit data and 4 AHB clock cycles for 32-bit data	Available
Supports PDMA to complete a CRC computation of a block of memory	Available

Peripheral Direct Memory Access – PDMA

Attribute	Value
6 channels with trigger source grouping	Available
8-bit, 16-bit, 32-bit width data transfer	Available
Supports Linear address, circular address and fixed address modes	Available
4-level programmable channel priority	Available
Auto reload mode	Available
Supports trigger source	ADC, SPI, QSPI, UART, I²C, GPTM, MIDI Engine and software request

SPI Flash Data Memory

Attribute	Value
Full voltage range	2.3 V ~ 3.6 V
Serial Interface Architecture	Available
SPI compatible	Mode 0 and Mode 3
256 bytes per programmable page	Available
Standard, Dual or Quad SPI modes	Available
Low power consumption	Available
Uniform Sector Architecture	Available
Any sector or block can be erased individually	Available
Software and Hardware Reset	Available
Read Unique ID Number	Available

Attribute	Value
Debug Support	Serial Wire Debug Port – SW-DP 4 comparators for hardware breakpoint or code / literal patch 2 comparators for hardware watch points

Package and Operation Temperature

Attribute	Value
48 / 64-pin LQFP package	Available
Operation temperature range	-40 °C to 85 °C

Title	Date	File Size	Language	Download

General Information

Feature Details

Reset Control Unit – RSTCU

Feature Details

Power Control Unit – PWRCU

Feature Details

Serial Peripheral Interface – SPI

Quad Serial Peripheral Interface – QSPI

Universal Asynchronous Receiver Transmitter – UART

Cyclic Redundancy Check – CRC

Peripheral Direct Memory Access – PDMA

SPI Flash Data Memory

Feature Details

Package and Operation Temperature

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