Product Name
EK-AI7931HD
Version
A
Doc No
912-13302
Date
2021/12/07
Page
10 / 20
PRODUCT USER GUIDE
www.acsip.com.tw
4.
Hardware Feature Configuration
4.1.
Microcontroller
The MCU subsystem consists of a 32-bit MCU, the AHB/APB bus matrix, internal RAM/ROM with ROM
patch function, the flash controller and the system peripherals including Direct Memory Access (DMA)
engine and the General-Purpose Timer (GPT). The AI7931HD features an ARM® Cortex-M33 processor,
which is the most energy efficient ARM® processor currently available. It supports the clock rates up to
200MHz when core power is 0.7V and 300MHz when core power is 0.8V.
The MCU executes the Thump-2 instruction set for optimal performance and code size, including
hardware division, single cycle multiplication and bit-field manipulation. The AI7931HD includes a
Memory Protection Unit (MPU) in Cortex-M33 MCU to detect unexpected memory access and provides
other memory protection features. The AI7931HD also includes FPU in Cortex-M33 MCU.
4.2.
Power supply
Power up with a micro-USB connector. An on-board switching regulator provides voltage of 3.3V for the
EK-AI7931HD based on AI7931HD, if the power is supplied from an on-board micro-USB connector CON6
(Figure 2) Note, that the jumpers J46, J33, J32, JP4 pin2 and pin3 and JP7 pin2 and pin3 are required to be
set on More details on the jumpers can be found in Table 1.
Figure 4. Default power jumper plot
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