HP Pro 1105 User's Guide download pdf (Page 8)

supported MCUs

page 8

EasyMx PRO

Default MCU card

Microcontrollers are supported using specialized MCU cards containing 104 pins,

which can be placed into the on-board female MCU socket. There are several types

of cards which cover all microcontroller families of STM32 Cortex

™

-M3, as well as

Cortex

™

-M4. The Default MCU card that comes with the EasyMx PRO

™

v7 for STM32

package is shown on Figure 4-1. It contains STM32F107VCT6 microcontroller with

on-chip peripherals and is a great choice for both beginners and professionals. After

testing and building the nal program, this card can also be taken out of the board

socket and used in your nal device.

STM32F107VCT6 is the default chip of EasyMx PRO

™

v7. It has 72MHz

frequency, 256K bytes of Flash memory, 64K bytes of general-purpose

SRAM, integrated Ethernet controller, USB 2.0 (OTG, Host, Device), 80 General

purpose I/O pins (mappable on 16 external interrupt), 4x16-bit timers, 2x12-

bit A/D (16 channels), 2x12-bit D/A , 5xUARTs, internal Real time clock (RTC),

2xI2C, 3xSPI and 2xCAN controllers.

25MHz crystal oscillator. We carefully chose the most convenient crystal

value that provides clock frequency which can be used directly, or with the PLL

multipliers to create higher MCU clock value. MCU card also contains 32.768 kHz

crystal oscillator which provides external clock for RTCC module.

USB communications lines. These two jumpers, when in USB position,

connect D+ and D- lines of the on-board USB connector with PA11 and PA12

microcontroller pins. Since STM32F107VCT6 supports USB, jumpers are in USB

position.

Figure 4-1: Default MCU card with STM32F107VCT6

Ethernet transceiver. Default MCU card contains single-chip Ethernet physical

(PHY) layer transceiver which provides additional Ethernet functionality to

STM32F107VCT6 controller

With STM32 Cortex

™

-M3 and Cortex

™

-M4 microcontrollers you have the

ability to select specic boot space (User ash memory, system memory

or embedded SRAM), depending on the boot pins value (BT0, PB2). Boot

pins are set to ground (0) through 100K resistors. In order to set BT0 and

PB2 pins to VCC (1), you must push SW11.1 and SW11.2 DIP switches to

ON position, Figure 4-2. The values on the BOOT pins are latched on the

fourth rising edge of system clock after a reset.

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HP Pro 1105 User's Guide Page 8

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