How to Select MYIR’s STM32MP1 based CPU Modules?

The STM32MP1 microprocessor series is based on a heterogeneous single or dual Arm Cortex-A7 and Cortex-M4 cores architecture, strengthening its ability to support multiple and flexible applications, achieving the best performance and power figures at any time. The Cortex-A7 core provides access to open-source Linux operating systems while the Cortex-M4 core leverages the STM32 MCU ecosystem. It is ideal for embedded applications with real-time and power constrained subsystems.

MYIR has released two CPU Modules MYC-YA157C and MYC-YA15XC-T since early 2020. Two development boards MYD-YA157C and MYD-YA15XC-T are also designed for evaluating the modules. Here we would like to guide customers on how to select MYIR’s STM32MP1 based CPU Modules.

1. Dimensions

The MYC-YA15XC-T is smaller in form factor, measuring only 39mm by 37mm while the MYC-YA157C is measuring 45mm*43mm.

2. Processors

The MYC-YA15XC-T CPU Module is based on STM32MP151 (STM32MP151AAC3) by default while the MYC-YA157C CPU Module is based on the STM32MP157 (STM32MP157AAC3) by default.

The STM32MP1 series is available in 3 different lines which are pin-to-pin compatible:
- STM32MP151: Single Cortex-A7 core up to @ 800 MHz, Cortex-M4 core @ 209 MHz
- STM32MP153: Dual Cortex-A7 cores up to @ 800 MHz, Cortex-M4 core @ 209 MHz and CAN FD
- STM32MP157: Dual Cortex-A7 cores up to @ 800 MHz, Cortex-M4 core @ 209 MHz, 3D GPU, DSI display interface and CAN FD

3. Memory and Storage
The MYC-YC157C has 512MB DDR3 and 4GB eMMC by default.
The MYC-YA15XC-T has two default configurations including 256MB DDR3L + 256MB Nand Flash and 512MB + 4GB eMMC.
The modules can support up to 1GB DDR3 plus 1GB Nand Flash or 128GB eMMC.

4. Ethernet PHY Chip

The MYC-YA157C has on-board Gigabit Ethernet PHY chip while the MYC-YA15XC-T has none.

5. Expansion Interface

Both of the modules bring out peripherals and IO signals through 1.0 mm pitch stamp-hole (Castellated-Hole) expansion interface which are populated on the base board with high stability and reliability. The MYC-YA157C has 164 pins while the MYC-YA15XC-T has 148 pins.

In general, if your project has high requirements on performance, network and display, we recommend using the CPU module MYC-YA157C. If your project is sensitive to the cost and does not require too high performance and too many peripheral resources, the CPU module MYC-YA15XC-T can be evaluated first. The two modules are both used in smart gateways, smart building access control management, FTU/DTU power distribution equipment, HMI and many other embedded applications.

About MYIR

MYIR Tech Limited focuses on providing Arm-based embedded processor modules. MYIR has more than 10 years of industry technical experience in the embedded field, and has always maintained a good cooperative relationship with ST and many other well-known semiconductor vendors. MYIR's products are used widely in industrial control, medical devices, consumer electronic, telecommunication systems, Human Machine Interface (HMI) and more other embedded applications. MYIR also has its own PCBA SMT factory to provide OEM/ODM services to support customers with a wide range of services that speed up their time to market.

You can get more information about MYIR from this website: www.myirtech.com