CN
Wireless Charging Transmitter
NU1520
NU1520 integrates 32bit 36MHz MCU core, SRAM and Flash which contains Application ROM, Security Protection ROM. NU1520 integrates programmable system clock source which supports 8/16/24MHz external crystal input or 8 MHz internal oscillator. NU1520 supports 64 kHz internal low-power oscillator for Watchdog Timer and idle wake-up. 6 pins of NU1520 can be configured as interrupt source with edge detection, 4 I/O pins have wakeup function. NU1520 provide 4 channels 32-bit timers with one 5-bit pre-scalar independent clock source for each timer. NU1520 provides continuous capture function which can continuously capture rising, falling, both rising and falling edge on one signal.
Key Spec
Features

• Input voltage range: 2.5V to 5.5V 

• Integrated 32bit 36MHz MCU core, 8KB SRAM, 128KB Flash(NU1520),64KB Flash(NU1521)

• 144MHz clock for 2 pairs of precise phase shift PWM control 

• 36MHz clock for 4 Basic PWMs 

• 11 channels low-speed 1MHz ADC • 1 channel high-speed 4MHz ADC 

• Integrated 1.5V LDO for digital power supply

• Robust PVD (programmable voltage detector) and thermal shut down protection 

• 5 enhanced captures 

• 4 timers

• 23 GPIOs and 7 GPINs.

• Support 2 x I2C module: one I2C master and one I2C slave

• Support 2 x UART interface 

• Up to 2 pairs of CC 

• Up to 3 pairs of D+/D- interface 

• Support Type-C DRP and PD 3.1 with PPS

• Support BC1.2,UFCS, QC 3.0, FCP/SCP,AFC charging sink and source protocols 

• 4.5mmx4.5mm 36 pin QFN Package

Applications

• Wireless power transmitter controller 

• Power bank power management

• Wired protocol controller

Datasheet Download
NU1520

2025 / 08 / 22