7. HPM6750EVKMINI
7.1. Overview
The HPM6750 is a dual-core flashless MCU running 816Mhz. It has a 2MB continuous on-chip ram. Also, it provides various memory interfaces, including SDRAM, Quad SPI NOR Flash, SD/eMMC. It integrates rich audio and video interfaces, including LCD, pixel DMA, camera, and I2S audio interfaces.
7.2. Hardware
HPM6750IVM MCU (816Mhz, 2MB OCRAM)
Onboard Memory
128Mb SDRAM
64Mb Quad SPI NOR Flash
Display & Camera
LCD connector
Camera (DVP)
WiFi
RW007 over SPI
USB
USB type C (USB 2.0 OTG) connector x1
Audio
Mic
DAO
Others
TF Slot
FT2232
Beeper
RGB LED
Expansion port
ART-PI extension port
7.3. DIP Switch S1
bit[2:1] |
Description |
|---|---|
OFF, OFF |
Boot from Quad SPI NOR flash |
OFF, ON |
Serial boot |
ON, OFF |
ISP |
7.5. Pin Description
SPI Pin
Function
Position
SPI2.CSN
P1[24]
SPI2.SCLK
P1[23]
SPI2.MISO
P1[21]
SPI2.MOSI
P1[19]
I2C Pin
Function
Position
I2C0.SCL
P1[13]
I2C0.SDA
P1[15]
ACMP Pin
Function
Position
CMP.INN6
P2[11]
CMP.COMP_1
P1[7]
GPTMR Pin
Function
Position
Remark
GPTMR5.CAPT_1
P1[12]
SENT decode input pin (idle low level)
GPTMR5.COMP_0
P1[31]
MCLK of i2s emulation
GPTMR5.COMP_1
P1[35]
LRCK of i2s emulation
GPTMR5.COMP_2
P2[38]
BLCK of i2s emulation
GPTMR5.CAPT_2
P2[23]
SENT decode input pin (idle high level)
ADC12 Pin
Function
Position
ADC12 Reference Voltage Setting
N/A
ADC0.VINP14
P1[33]
ADC16 Pin
Function
Position
ADC16 Reference Voltage Setting
N/A
ADC3.INA2
P1[16]
PWM Pin
Function
Position
PWM0.P4
P1[29]
PWM0.P5
P1[32]
DAO interface
Function
Position
Speaker
J2
I2S pin
Function
Position
I2S0.FCLK
P1[35]
I2S0.BCLK
P1[12]
I2S0.RXD1
P1[38]
I2S0.TXD1
P1[40]
GND
P1[39]
Ethernet PPS Pin
Function
Pin
Position
ENET0.EVTO0
PF05
P1[38]
ENET0.EVTO1
PF06
P1[12]
ENET0.EVTO2
PF09
P1[35]
ENET0.EVTI0
PF00
P1[26]
ENET0.EVTI1
PF01
P1[27]
ENET0.EVTI2
PF02
P1[28]
UART13 pin
The UART13 is used for core1 debug console or some functional testing using UART, such as uart_software_rx_idle, uart_rx_timeout, uart_software_lin, MICROROS_UART, USB_CDC_ACM_UART, MODBUS_RTU etc.
Function
Position
Remark
UART13.TXD
P1[8]
UART13.RXD
P1[10]
UART13.break
P1[24]
generate uart break signal
TRGMUX pin for uart_software_rx_idle sample
Function
Position
TRGM2_P9 (PD19)
P2[35]
Motor Pin
Refer to section HPM6750EVKMINI-TO-Motor Motor Expansion Board for configuration
Tamper Pin
Function
Pin
Position
Mode
TAMP.08
PZ08
P1[10]
Active Mode
TAMP.09
PZ09
P1[8]
Active Mode
TAMP.10
PZ10
P1[22]
Passive Mode
CS Pin of i2s emulation
Function
Position
Remark
PD25
P2[40]
the pin that controls the SPI slave CS
CLOCK REF Pin
Function
Position
PE24
P2[16]
ESP-HOSTED Pin
Function
Position
Note
PB13
P1[3]
RESET Pin
PB10
P1[15]
HANDSHAKE Pin
PB11
P1[13]
DATA_READY Pin
BROWNOUT Interrupt Indicator Pin
Function
Position
PZ09
P1[8]
7.6. Known Issues
Some samples may enter the trap handler during runtime, with a MCAUSE == 2 (instruction error). This is due to a flaw in ILM, as detailed in the Errata Manual E00001.
Solution: Change the ILM interface address in the link script to ILM_SLV address.