N32G4FRKEQ7

The N32G4FR series features a 32-bit ARM Cortex-M4 core with a maximum operating frequency of 144MHz, supporting floating-point operations and DSP instructions. It incorporates a built-in cryptographic algorithm hardware acceleration engine, integrating up to 512KB encrypted Flash memory and 144KB SRAM for secure fingerprint data storage. The series supports mainstream semiconductor and optical fingerprint sensors, and integrates a rich set of general-purpose peripheral interfaces including U(S)ART, I2C, SPI, QSPI, USB, ADC, DAC, and SDIO.

Applications

• Suitable for secure storage of fingerprint data
• Compatible with mainstream semiconductor and optical fingerprint sensors

Key features

• 32-bit ARM Cortex-M4 core with FPU, single-cycle hardware multiply/divide instructions, DSP instructions and MPU support
• Built-in 8KB instruction cache with Flash acceleration unit for zero-wait program execution
• Up to 144MHz CPU frequency, 180DMIPS
• Up to 512KByte on-chip Flash with encrypted storage, partition management and data protection, hardware ECC, 100K erase/write cycles, 10-year data retention
• 144KByte on-chip SRAM (including 16KByte Retention RAM) with hardware parity check
• Standby mode: 3uA, 84 backup registers retained, all IOs retained, optional RTC run, 16KByte Retention SRAM retained, VBAT pin independent power supply, 100uS fast wake-up
• Stop2 mode: 5uA, RTC run, 16KByte Retention SRAM retained, CPU registers retained, all IOs retained, 40uS fast wake-up
• Stop0 mode: 120uA, RTC run, all SRAM retained, all IOs retained, 20uS fast wake-up
• 4MHz~32MHz external high-speed crystal, 32.768KHz external low-speed crystal
• Internal high-speed RC 8MHz
• Internal low-speed RC 40KHz
• Built-in high-speed PLL
• 1 clock output, configurable as system clock, HSE, HSI, or post-PLL divided output
• Power-on/power-down/undervoltage/external pin reset support
• Watchdog reset and software reset support
• Up to 65 GPIOs with multiplexed functions, max toggle speed 50MHz, most GPIOs 5V-tolerant
• 7 U(S)ART interfaces up to 4.5Mbps: 3 USART interfaces (1×ISO7816, 1×IrDA, LIN support) and 4 UART interfaces
• 3 SPI interfaces up to 36MHz, 2 with I2S support
• 1 QSPI interface up to 144Mbps
• 4 I2C interfaces up to 1MHz, master/slave configurable, dual-address response in slave mode
• 1 USB2.0 Full Speed Device interface
• 2 CAN 2.0B bus interfaces
• 1 SDIO interface supporting SD/MMC format
• 1 DVP (Digital Video Port)
• 2× 12-bit 5Msps high-speed ADC, configurable as 12/10/8/6-bit mode, up to 9Msps in 6-bit mode, up to 16 external single-ended input channels, differential mode support
• 2× 12-bit DAC, 1Msps sampling rate
• External independent reference voltage source input support
• All analog interfaces support full voltage operation at 1.8~3.6V
• 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
• 2× 16-bit advanced timer/counters with input capture, complementary output, quadrature encoder input, max control resolution 6.9nS; each timer has 4 independent channels, 3 of which support 6-channel complementary PWM output
• 4× 16-bit general-purpose timer/counters, each with 4 independent channels, supporting input capture/output compare/PWM output
• 2× 16-bit basic timer/counters
• 1× 24-bit SysTick
• 1× 7-bit WWDG
• 1× 12-bit IWDG
• SWD/JTAG debug interface support
• UART and USB Bootloader support
• Built-in cryptographic hardware acceleration engine
• AES, DES, SHA, SM1, SM3, SM4, SM7, MD5 algorithm Flash storage encryption, multi-user partition management (MMU), TRNG true random number generator
• CRC16/32 computation
• Write protection (WRP) and multiple read protection (RDP) levels (L0/L1/L2)
• Secure boot, encrypted program download, secure update support
• Clock failure detection and tamper detection support
• Operating voltage: 1.8V~3.6V
• Operating temperature: -40°C~105°C
• ESD: ±4KV (HBM model), ±1KV (CDM model)