ADI的ARM开发板电路原理图(ADuC7020)

是ADI公司的ADuC7020芯片的核心板！蛮不错的！

实际效果图：

INFO:

ADuC-H7020 provide low cost way to develop with ADuC7020 microcontroller without need of fancy soldering skils. This board is designed to fit in normal DIL40 socket, so you can make your prototypes easy and troubles free. ADuC7020 is unique with the 1Msps ADCs and DACs and with the 3 phase PWM.

FEATURES:

MCU: ADuC7020 - ARM7TDMI Core, 16/32-bit RISC architecture, 5 Channels 12-bit, 1MSPS ADC, Differential and single-ended modes, 0 to Vref Analog Input Range, 4 Outputs 12-bit Voltage Output DACs, On-Chip 20ppm/°C Voltage Reference, On-Chip Temperature Sensor (±3°C), Uncommitted Voltage Comparator, JTAG Port, Clocking options: Trimmed On-Chip Oscillator (± 2%), External Watch crystal, External clock source

45MHz PLL with Programmable Divider, 62k Bytes Flash/EE Memory, 8k Bytes SRAM, In-Circuit Download, JTAG based Debug, Software triggered in-circuit re-programmability, UART, dual I2C and SPI Serial I/O, 14-Pin GPIO Port, 2 X General Purpose Timers, Wake-up and Watchdog Timers, Power Supply Monitor, PLA C Programmable Logic (Array), Power Specified for 3V operation, Active Mode: 6mW (@1MHz) 300mW (@45MHz), Fully specified for C40°C to 85°C operation;

DIL-40 (0.6" wide) layout for easy mount on prototype/mother boards

RESET button

SERIAL DOWNLOAD (bootloader enable) button

green LED status

red power supply LED

32 768 Hz oscillator crystal

power supply filtering capacitors and ferite bead

PCB: FR-4, 1.5 mm (0,062"), green soldermask, white silkscreen component print

SOFTWARE:

ADC read DAC write demo code for EW-ARM

Blink LED demo code for EW-ARM

RS232 , UART, demo code for EW-ARM

DAC sinusoidal generation demo code for EW-ARM

SPI demo code for EW-ARM

Basic initializations for ADUC7020 demo code for EW-ARM