MT2523 datasheet

Part of the MediaTek MT2523 product family, which also includes MT2523D, MT2523G is a highly integrated chip that contains a microcontroller unit, low-power consumption GNSS, dual-mode Bluetooth and a power management unit. The microcontroller unit is an ARM Cortex-M4 processor with FPU, integrated with 4MB PSRAM and 4MB flash memory. MT2523G also supports a wide range of interfaces including UART, I2C, SPI, I2S, PWM, SDIO, MSDC, USB, PCMIF, ADC and dual digital microphone.

MT2621 datasheet

MT2621 is dual-mode IoT SoC that capable of both NB-IoT R14 and GSM/GPRS connectivity enabling extended coverage, cross-market application with network transition function and phone call applications; such as smart trackers, wearables, IoT security, smart metering and industrial applications. MT2621 is ideal for long-life designs and long-term installations, anticipating future cellular network infrastructure change-over from GSM to NB-IoT.