N32A455xxL8 Integrated Multi-Channel U(S)ART, I2C, SPI, QSPI, and CAN Communication Interfaces

N32A455xxL8

32-bit MCU

Power chip, MOSFET, 32-bit MCU

Overview01

The N32A455xxL8 series features a 32-bit ARM Cortex-M4F core, with a maximum operating frequency of 72MHz, supporting floating-point operations and DSP instructions. It integrates up to 512KB Flash, 144KB SRAM, 4x12bit 4.2Msps ADC, 4x OPAMP, 7x COMP, 2x 1Msps 12bit DAC, and integrates multiple U(S)ART, I2C, SPI, QSPI, and CAN communication interfaces, along with a 1x SDIO interface and a built-in hardware acceleration engine for cryptographic algorithms.

Features02

 Core CPU

― 32 bit ARM Cortex-M4 core + FPU, single-cycle hardware multiplication and division instructions, supporting DSP instructions and MPU

― Built-in 8KB instruction Cache , supports Flash acceleration unit for program execution with 0 wait states

― Maximum frequency of 72MHz, 90 DMIPS

 Encrypted Memory

― Up to 512KByte on-chip Flash, supports encrypted storage, multi-user partition management, and data protection, with hardware ECC verification, 100,000 erase cycles, 10 years data retention

― 144KByte on-chip SRAM (including 16KByte Retention RAM), Retention RAM supports hardware parity check

 Clock

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

― LSE: 32.768KHz external low-speed crystal

― HSI: Internal high-speed RC OSC 8MHz

― LSI: Internal low-speed RC OSC 40KHz

― Built-in high-speed PLL

― Supports 1 clock output, configurable as system clock, HSE, HSI or PLL post-divider output

 Reset

― Supports power-on/power-off/ external pin reset

― Supports programmable low voltage detection and reset

― Supports watchdog reset

 Communication Interfaces

― 7 LIN/U(S)ART interfaces, maximum rate up to 4.5 Mbps, including 3 USART interfaces (supporting 1x ISO7816, 1x IrDA, SmartCard), 4 UART interfaces

― 3 SPI interfaces, speeds up to 36 MHz, of which 2 support I2S

― 1 QSPI interface, speed up to 144 Mbps

― 4 I2C interfaces, speed up to 1 MHz, master/slave mode configurable, slave mode supports dual address response

― 2 CAN 2.0A/B bus interfaces

― 1 SDIO interface, supports SD/MMC format

 High-Performance Analog Interfaces2 / 80

― 4 12bit 4.2Msps high-speed ADC, configurable to 12/10/8/6bit modes, 6bit mode sampling rate up to 9Msps, with up to 38 external single-ended input channels, supporting differential mode

― 4 rail-to-rail operational amplifiers, built-in maximum 32 times programmable gain amplifier

― Up to 7 high-speed analog comparators, built-in 64 levels adjustable comparison reference

― 2 12bit DAC, sampling rate 1Msps

― Supports external input independent reference voltage source

― All analog interfaces support 1.8~3.6V full voltage operation

 Maximum support for 80 GPIOs with multiplexing functions, most GPIO support 5V tolerance.

 2 high-speed DMA controllers, each controller supports 8 channels, with arbitrary configurable source and destination addresses

 RTC real-time clock, supports leap year calendar, alarm events, periodic wake-up, supports internal and external clock calibration

 Timer Counters

― 2 16bit advanced timer counters, supporting input capture, output compare, PWM output and quadrature encoding input functions, with maximum control precision of 13.9ns. Each timer has 4 independent channels, of which 3 channels support 6 complementary PWM outputs

― 4 16bit general-purpose timer counters, each timer has 4 independent channels, supporting input capture/ output compare/PWM output

― 2 16bit basic timer counters

― 1x 24bit SysTick

― 1x 7bit window watchdog (WWDG)

― 1x 12bit independent watchdog (IWDG)

 Programming Interface

― Supports SWD/JTAG online debugging interface

― Supports UART Bootloader

 Security Features

― Built-in cryptographic algorithm hardware acceleration engine

― Supports DES/3DES, AES, SHA1/SHA224/SHA256, SM1, SM3, SM4, SM7, MD5 algorithms

― Flash storage encryption

― Multi-user partition management (MMU)

― TRNG true random number generator

― CRC16/32 computation

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

― Supports secure boot, program encrypted download, secure updates

― Supports clock failure monitoring, tamper detection

 96 bit UID and 128 bit UCID

 Operating Conditions

― Operating voltage range:1.8V~3.6V3 / 80

― Operating temperature range:-40℃～125℃

― Passed AEC-Q100-G2 certification

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

Package03

― LQFP48(7mm x 7mm)

― LQFP64(10mm x 10mm)

― LQFP100(14mm x 14mm)

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