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“I’ve built a playable, MIDI capable, polyphonic FM synthesizer using an 32bit ARM Cortex M0 microcontroller and an audio codec. This was a learning experience for me. You can find the finished form of the system in following two …
Content for ATxmega32E5
The high-performance, low-power 8/16-bit AVR® XMEGA microcontroller combines 32KB ISP flash memory (plus 4KB boot code section) with read-while-write capabilities, 1KB EEPROM, 4KB SRAM, eight-channel event system, a programmable multi-level interrupt controller, 26 general purpose I/O lines, one 16-bit real time counter, three flexible 16-bit timer/counters with compare modes and PWM, two USARTs (with SPI Master mode), one Two-Wire Interfaces (TWI) with SMBUs Level 1 support, one Serial Peripheral Interface (SPI), one 16-channel/12-bit 300kSPS A/D converter with optional differential input with programmable gain, one two-channel 12-bit 1MSPS D/A converter, two analog comparators with window mode, a programmable watchdog timer with separate internal oscillator, accurate internal oscillators with PLL and prescaler, and programmable brown-out detection.