ADuC845

Data Sheet FEATURES High resolution Σ-Δ ADCs 2 independent 24-bit ADCs on the ADuC845 Single 24-bit ADC on the ADuC847 and single 16-bit ADC on the ADuC848 Up to 10 ADC input channels on all devices 24-bit no missing codes 22-bit rms (19.5 bit p-p) effective resolution Offset drift 10 nV/°C, gain drift 0.5 ppm/°C chop enabled Memory 62-kbyte on-chip Flash/EE program memory 4-kbyte 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 download (no external hardware) High speed user download (5 sec) 2304 bytes on-chip data RAM 8051-based core 8051-compatible instruction set High performance single-cycle core 32 kHz external crystal On-chip programmable PLL (12.58 MHz max) 3 × 16-bit timer/counter 24 programmable I/O lines, plus 8 analog or digital input lines 11 interrupt sources, two priority levels Dual data pointer, extended 11-bit stack pointer On-chip peripherals Internal power-on reset circuit 12-bit voltage output DAC Dual 16-bit Σ-Δ DACs On-chip temperature sensor (ADuC845 only) Dual excitation current sources (200 μA) Time interval counter (wake-up/RTC timer) UART, SPI®, and I2C® serial I/O High speed dedicated baud rate generator (incl. 115,200) Watchdog timer (WDT) Power supply monitor (PSM) MicroConverter® Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU ADuC845/ADuC847/ADuC848 Power Normal: 4.8 mA max at 3.6 V (core CLK = 1.57 MHz) Power-down: 20 μA ...