System Overview

MT3620 features two general purpose ARM Cortex-M4F I/O subsystems, each of which runs at up to 200MHz.
These subsystems were designed to support real-time requirements when interfacing with a variety of on-chip peripherals including UART, I2C, SPI, I2S, and ADC.
They are completely general-purpose Cortex-M4F units which may be tailored to specific application requirements.
On-chip peripherals may be mapped to any of the three end-user accessible cores, including the CA7.

MT3620 Cortex M4 Main features

Two general purpose ARM Cortex M4 cores, each with 192kB TCM, 64kB SRAM, and integrated FPU; ideal for real-time control requirements
In-package serial flash
User-accessible cores support execute-in-place (XIP) from flash
Five "ISU" serial interface blocks which can be configured as I2C master. I2C slave, SPI master, SPI slave, or UART; I2C runs at up to 1MHz, SPI at up to 40MHz, and UARTs at up to 3Mbps
Two I2S interfaces supporting slave and TDM slave modes
Eight-channel, 12-bit, 2MS/s single-ended successive approximation ADC using internal 2.5V or external 1.8V reference
76 programmable GPIO pins with programmable drive strength (some multiplexed with other functions)
12 PWM outputs
24 external interrupt inputs
Six hardware counter blocks which can count and measure pulses and perform quadrature decoding
RTC can run from dedicated 32 kHz external input, from on-die 32 kHz oscillator, from on-die ring oscillator, or from main oscillator
One-time programmable e-fuse block for storing chip-specific information
Two additional, dedicated UARTs, one for each CM4F I/O subsystem
Per-core watchdog timers
Per-core general-purpose timers

License

Copyright Statement:

This MT3620 driver software/firmware and related documentation ("MediaTek Software") are protected under relevant copyright laws. The information contained herein is confidential and proprietary to MediaTek Inc. ("MediaTek"). You may only use, reproduce, modify, or distribute (as applicable) MediaTek Software if you have agreed to and been bound by this Statement and the applicable license agreement with MediaTek ("License Agreement") and been granted explicit permission to do so within the License Agreement ("Permitted User"). If you are not a Permitted User, please cease any access or use of MediaTek Software immediately.

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