ADI EVAL-ADUC814QSZ

The ADuC814 is a fully integrated 247 kSPS, 12-bit data acquisition system incorporating a high performance multichannel ADC, an 8-bit MCU, and program/data Flash/EE memory on a single chip. This low power device operates from a 32 kHz crystal with an on-chip PLL generating a high frequency clock of 16.78 MHz. This clock is, in turn, routed through a programmable clock divider from which the MCU core clock operating frequency is generated. The microcontroller core is an 8052 and is compatible with an 8051 instruction. 8 kBytes of nonvolatile Flash/EE program memory are provided on-chip. 640 bytes of nonvolatile Flash/EE data memory and 256 bytes RAM are also integrated on-chip. The ADuC814 also incorporates additional analog functionality with dual 12-bit DACs, a power supply monitor, and a band gap reference. On-chip digital peripherals include a watchdog timer, time interval counter, three timer/counters, and two serial I/O ports (SPI and UART). On-chip factory firmware supports in-circuit serial download and debug modes (via UART), as well as single-pin emulation mode via the DLOAD pin. The ADuC814 is supported by a QuickStart Development System. The part operates from a single 3V or 5V supply over the extended temperature range -40℃ to +125℃. When operating from 3V supplies, the power dissipation for the part is below 10 mW. The ADuC814 is housed in a 28-lead TSSOP 4.4 mm×9.7 mm package.

• ANALOG I/O 6-channel 247 kSPS ADC 12-bit resolution ADC high speed data capture mode
• Programmable reference via on-chip DAC for low level inputs, ADC performance specified to VREF = 1 V
• Dual voltage output DACs 12-bit resolution, 15 µs settling time
• Memory 8 kbytes on-chip Flash/EE program memory 640 bytes on-chip Flash/EE data memory
• Flash/EE, 100 year retention, 100 kcycle endurance
• 3 levels of Flash/EE program memory security
• In-circuit serial downlaod (no external hardware)
• 256 bytes on-chip data RAM
• 8051 based core 8051 compatible instruction set
• 32 kHz external crystal, on-chip programmable PLL (16.78 MHz max)
• Three 16-bit timer/counters
• 11 programmable I/O lines
• 11 interrupt sources, 2 priority levels
• Power Specified for 3 V and 5 V operation
• Normal: 3 mA @ 3 V (core CLK = 2.1 MHz)
• Power-down: 75 µA (32 kHz oscillator running)
• On-chip peripherals Power-on reset circuit (no need for external POR device)
• Temperature monitor (±1.5℃ accuracy)
• Precision voltage reference
• Time interval counter (wake-up/RTC timer)
• UART serial I/O
• SPI/I²C compatible serial I/O
• Watchdog timer (WDT), power supply monitor (PSM)
• Package and temperature range 28-lead TSSOP 4.4 mm×9.7 mm package
• Fully specified for -40℃ to +125℃ operation

• Optical networking—laser power control
• Base station systems—power amplifier bias control
• Precision instruments, smart sensors
• Battery-powered systems, precision system monitors