N32G435GBQ7

The N32G435 series features a 32-bit ARM Cortex-M4 core with a maximum operating frequency of 108MHz, supporting floating-point operations and DSP instructions. The series integrates up to 128KB of embedded encrypted flash memory and 32KB SRAM, along with a rich set of high-performance analog peripherals: one 12-bit 5Msps ADC, two independent rail-to-rail op-amps, two high-speed comparators, one 1Msps 12-bit DAC, and support for up to 20 channels of capacitive touch keys. Additionally, it integrates multiple USART, I²C, SPI, USB, and CAN digital communication interfaces, along with a built-in cryptographic algorithm hardware acceleration engine.

Key features

• 32-bit ARM Cortex-M4 core with FPU, single-cycle hardware multiply/divide instructions, DSP instructions, and MPU
• 2KB instruction cache with flash accelerator for zero-wait-state program execution
• Up to 108MHz CPU frequency, 135DMIPS performance
• Up to 128KB on-chip flash with encrypted storage, partition management, data protection, hardware ECC, 100K erase/write cycles, 10-year data retention
• Up to 32KB on-chip SRAM: 24KB SRAM1 + 8KB SRAM2, with hardware parity check
• Standby mode current as low as 2.5μA, retaining all backup registers and I/O states, optional RTC operation, configurable 8KB SRAM2, fast wakeup support
• Stop 2 mode current 6μA with RTC running, configurable 8KB SRAM2 and 24KB SRAM1, CPU register and I/O state retention, fast wakeup support
• Run mode current 90μA/MHz @ 108MHz
• One 12-bit 5Msps ADC with multiple resolution modes, up to 9Msps in 6-bit mode, up to 16 external single-ended input channels, differential mode support
• Two rail-to-rail op-amps with built-in programmable gain amplifier up to 32×
• Two high-speed analog comparators with 64-level adjustable reference; comparator 1 supports operation in Stop 2 low-power mode
• Up to 20-channel capacitive touch keys with MCU wakeup from low-power state
• One 12-bit 1Msps DAC
• Internal 2.048V independent voltage reference
• Integrated low-voltage detection unit
• Clock sources: 4MHz–32MHz external HSE crystal, 32.768kHz external LSE crystal, internal 16MHz HSI RC oscillator, internal 100kHz–4MHz MSI RC oscillator, internal 40kHz LSI RC oscillator
• Built-in high-speed PLL
• One clock output, configurable as low-speed or high-speed clock
• Power-on/power-down/external pin reset, programmable BOR and reset, watchdog reset
• Up to 52 GPIO pins
• Five USART interfaces; three support ISO7816, IrDA, and LIN; two are standard UART
• One LP-UART with MCU wakeup from Stop 2 low-power state
• Two SPI interfaces up to 27Mbps with I²S support
• Two I²C interfaces up to 1MHz, configurable master/slave mode, dual-address response in slave mode
• One USB 2.0 full-speed device interface
• One CAN 2.0A/B interface
• One high-speed DMA controller with 8 channels, freely configurable source and destination addresses
• RTC with leap year perpetual calendar, alarm events, and periodic wakeup; internal/external clock calibration support
• Two 16-bit advanced timers with input capture, complementary output, quadrature encoder input, up to 9.25ns control resolution; each with four independent channels, three supporting six complementary PWM outputs
• Five 16-bit general-purpose timers, each with four independent channels supporting input capture/output compare/PWM output
• Two 16-bit basic timers
• One 16-bit low-power timer with dual-pulse counting, operational in Stop 2 state
• One 24-bit SysTick timer
• One 7-bit WWDT
• One 12-bit IWDG
• SWD/JTAG debug interface
• UART and USB bootloader support
• Hardware cryptographic accelerator supporting AES, DES, 3DES, SHA-1/224/256, and Chinese national standards SM1, SM3, SM4, SM7
• Flash encryption with multi-user partition management
• True random number generator (TRNG)
• CRC16/32 computation
• Write protection and multiple read protection levels
• Secure boot, encrypted firmware download, and secure update
• External clock failure detection and tamper detection
• 96-bit UID and 128-bit customer ID
• Supply voltage: 1.8V–3.6V
• Operating temperature: -40℃ to 105℃
• ESD protection: ±4kV (HBM), ±1kV (CDM)
• Available packages: QFN28, LQFP32, LQFP48, LQFP64