Nations Technologies Inc N32G455VEL7

The N32G455 series features a 32-bit ARM Cortex-M4F core with a maximum operating frequency of 144MHz, supporting floating-point operations and DSP instructions. It integrates up to 512KB Flash, 144KB SRAM, 4x12-bit 5Msps ADC, 4 operational amplifiers, 7 analog comparators, 2x1Msps 12-bit DAC, support for up to 24-channel capacitive touch keys, multiple U(S)ART, I2C, SPI, QSPI, USB, and CAN communication interfaces, 1x SDIO interface, and a built-in cryptographic algorithm hardware acceleration engine.

• Core CPU: 32-bit ARM Cortex-M4 + FPU, single-cycle hardware multiply/divide instructions, DSP instructions and MPU support; 8KB instruction cache, Flash accelerator unit enabling zero-wait-state execution up to 144MHz, 180DMIPS
• Encrypted Memory: Up to 512KByte on-chip Flash with encrypted storage, multi-user partition management, data protection, hardware ECC, 100,000 erase/write cycles, 10-year data retention; 144KByte on-chip SRAM (including 16KByte Retention RAM) with hardware parity check support
• 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; on-chip high-speed PLL with 1 clock output, configurable as system clock, HSE, HSI, or post-PLL divided output
• Reset: Power-on/power-down/external pin reset; programmable low-voltage detection and reset; watchdog reset
• Communication Interfaces: 7× U(S)ART up to 4.5Mbps, including 3× USART (1×ISO7816, 1×IrDA, LIN) and 4× UART; 3× SPI up to 36MHz, 2 with I2S support; 1× QSPI up to 144Mbps; 4× I2C up to 1MHz, master/slave configurable, dual-address response in slave mode; 1× USB2.0 Full Speed Device; 2× CAN 2.0A/B; 1× SDIO supporting SD/MMC
• High-Performance Analog Interfaces: 4× 12-bit 5Msps high-speed ADC, configurable as 12/10/8/6-bit, up to 9Msps in 6-bit mode, up to 40 external single-ended input channels with differential mode support; 4× rail-to-rail op-amps with built-in up to 32× programmable gain amplifier; up to 7 high-speed analog comparators with 64-level adjustable reference; up to 24-channel capacitive touch keys with low-power wake-up; 2× 12-bit DAC at 1Msps; external independent reference voltage input; all analog interfaces support 1.8~3.6V full-voltage operation
• Up to 80 GPIOs with multiplexed functions, most 5V-tolerant
• 2× high-speed DMA controllers, each with 8 channels, arbitrary configurable source and destination addresses
• RTC with leap year perpetual calendar, alarm events, periodic wake-up, internal/external clock calibration
• Timer/Counters: 2× 16-bit advanced timers with input capture, output compare, PWM output, and quadrature encoder input, maximum control resolution 6.9nS, each with 4 independent channels (3 channels supporting 6× complementary PWM output); 4× 16-bit general-purpose timers, each with 4 independent channels, supporting input capture/output compare/PWM output; 2× 16-bit basic timers; 1× 24-bit SysTick; 1× 7-bit WWDG; 1× 12-bit IWDG
• Programming: SWD/JTAG debug interface; UART and USB Bootloader
• Security Features: On-chip cryptographic hardware acceleration engine supporting AES, DES, SHA, SM1, SM3, SM4, SM7, and MD5; Flash storage encryption; multi-user partition management (MMU); TRNG; CRC16/32; write protection (WRP), multiple read protection (RDP) levels (L0/L1/L2); secure boot, encrypted program download, secure update; clock failure detection, tamper detection
• 96-bit UID and 128-bit UCID
• Operating Conditions: Supply voltage: 1.8V~3.6V; operating temperature: -40°C~105°C; ESD: ±4KV (HBM), ±1KV (CDM)