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N32H481 series adopts a 32-bit ARM Cortex-M4F core, with a maximum operating frequency of 240MHz, supporting floating-point unit and DSP instructions. It integrates up to 512-KB embedded flash, 192-KB SRAM (including 32-KB CCM SRAM), and 4-KB Backup SRAM. It also integrates 4x 12bit 4.7Msps ADCs, 2x 12bit DAC, USB HS DualRole, U(S)ART, I2C, SPI, and other communication interfaces. It supports xSPI high-speed storage interfaces, I2S audio interface, multiple advanced control timers, general timers, basic timers, low-power timers. It also features a built-in hardware acceleration engine for cryptographic algorithms, supporting AES/TDES, SHA, SM3, SM4, MD5 algorithms, TRNG true random number generator, and CRC16/32.

Main Features

• CPU Core

― 32-bit ARM Cortex-M4F + FPU, single-cycle hardware multiplication and division instruction, support DSP instruction and MPU

― Built-in 8-KB instruction Cache supporting Flash acceleration unit for zero-wait program execution

― Frequency up to 240 MHz, 300 DMIPS

• Memories

― 512-KByte of embedded Flash memory with ECC
♦ Supports encryption, multi-user partition and data protection
♦ 10,000 erase/write cycles and 10-years data retention

― 160-KByte of general SRAM with hardware parity checking

― 32-KByte of CCM SRAM with ECC, defaults to general SRAM after power-up, configurable as CCM SRAM

― 4-KByte of Backup SRAM with ECC available in Standby mode

• Power Modes

― Run mode: 48 mA/MHz@240 MHz (peripherals off, 3.3 V@25℃)

― Stop0 mode: SRAM and all registers can be configured to retention

― Standby mode: 22uA, all backup registers and Backup SRAM retained, all IOs retained, optional RTC run

• Clock

― HSE: 4MHz~32MHz high-speed external crystal oscillator

― Built-in multiple high speed PLLs

― MCO: Supports 2-channel clock outputs, which can be configured independently as clock output

― HSI: High-speed internal RC 8MHz, -1.5% to +2% accuracy (full temperature range)

― LSI: Low-speed internal RC 32KHz, +/-10% accuracy (full temperature range)

• Reset

― Supports power-on/brown-out/external pin reset

― Supports watchdog reset

― Supports programmable voltage detection

• GPIOs

― Up to 56 GPIOs

• Communication Interfaces

― 1x USB HS DualRole interface, built-in PHY

― 6x SPI interfaces, 2x I2S interfaces, support half/full duplex mode, multiplexed with SPI interfaces

― U(S)ART interfaces
♦ 3x USART interfaces (support ISO7816, IrDA, LIN)
♦ 4x UART interfaces
♦ TX/RX of USART3/UART5/UART8 can be mapped to all pins

― 4x I2C interfaces(Master/Slave) with speed up to 1 MHz where slave mode support dual address response

• High Performance Analog Interfaces

― 4x 12bit ADCs with 4.7Msps
♦ Multiple precision configuration, support 12-bit, 10-bit, 8-bit, 6-bit sampling precision, resolution up to 16-bit with hardware oversample
♦ support differential mode and single-ended mode, 4 ADCs support a total of 47 external channels

― 2x 12bit DAC with 1Msps sampling rate
♦ Each DAC support 1 internal output channel and 1 external output channel
♦ Support output channel buffered/unbeffered modes, supports internal output, external output, and simultaneous internal and external output.

― 1x temperature sensor

• High Speed External Memory Interfaces

― 1x xSPI interface, supporting external SRAM, PSRAM and Flash, supporting XIP

• DMA Controllers

― 2x DMA controller

― Each controller supports 8 channels

― Channel source address and destination address can be configured arbitrarily

• RTC real-time clock

― Supports leap-year calendar, alarm event, periodic wake up

• Timers

― 3x 16-bit advanced control timers with maximum control precision of 4.16 ns
♦ Support input capture, complementary output, quadrature encoder input etc.
♦ Each timer has 6 independent channels, ATM1 supports 4 pairs of complementary PWM outputs, ATM2 and ATIM3 support 3 pairs of complementary PWM outputs.

― 10x 16-bit general purpose timers (GTIM1~10)
♦ GTIM1~7, with a maximum control precision of 5.56ns, each timer has up to 4 independent channels, each channel supports input capture, output comparison, PWM generation, and single-pulse mode output.
♦ GTIM8~10, with a maximum control precision of 4.16ns, each timer has up to 4 independent channels, each channel supports input capture, output comparison, PWM generation, and single-pulse mode output, only channel 1 supports complementary output with dead time, supports break input.

― 2x 32-bit basic timers

― 2x 16-bit low-power timer, can operate in Stop0 and Standby mode.

― 1x 24-bit SysTick timer.

― 1x 14-bit Window Watchdog (WWDG)

― 1x 12-bit Independent Watchdog (IWDG)

• Programming Methods

― Support SWD/JTAG debugging interface.

― Support UART Bootloader

• Security Features

― Flash encryption, multi-user partition management unit (SMPU)

― Supports write protection (WRP), multiple read protection (RDP) levels (L0/L1/L2)

― Built-in hardware acceleration engine for cryptographic algorithm

― Supports AES/TDES, SHA, SM3, SM4, and MD5 algorithms

― True random number generator(TRNG) ― CRC16/32 operation

― Supports secure boot, program encryption download, secure firmware update

― Supports external clock failure detection.

• 96-bit UID and 128-bit UCID

• Operating Conditions

― Operating voltage range: 1.8V~3.6V

― Operating temperature range: -40℃ ~ 105℃

― ESD: ±4KV (HBM model), ±1KV (CDM model)

― EFT: VDD (+/-4KV，level A)，I/O (+/-2KV，level A)

Technical Support

Should you have any questions, please feel free to contact us and we will reply to you as soon as possible.

supports@nsing.com.sg

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