The ADUC824BSZ is a 8-bit Microcontroller incorporates two high-resolution 2-channel 24-bit sigma-delta (Σ-Δ) ADC and program/data Flash/EE Memory on a single chip. This low power device accepts low-level signals directly from a transducer. The two independent ADCs (Primary and Auxiliary) include a temperature sensor and a PGA. The ADC output data rates are programmable and the ADC output resolution will vary with the programmed gain and output rate. The device operates from a 32kHz crystal with an on-chip PLL generating a high-frequency clock of 12.58MHz. 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 therefore 8051-instructionset-compatible. The microcontroller core machine cycle consists of 12 core clock periods of the selected core operating frequency.
● High resolution sigma-delta ADCs
● Two independent ADCs (16 and 24-bit resolution)
● Programmable gain front end
● 24-bit No missing codes, primary ADC
● 8kB On-chip flash/EE program memory
● 640byte On-chip flash/EE data memory
● Flash/EE, 100 years retention, 100k cycles endurance
● 256byte On-chip data RAM
● 8051 Compatible instruction set (12.58MHz Maximum)
● 32kHz External crystal, on-chip programmable PLL
● Three 16-bit Timer/counters
● 26 Programmable I/O lines
● 3mA at 3V (core CLK = 1.5MHz) Normal power consumption
● On-chip temperature sensor
● 12-bit Voltage output DAC
● Dual excitation current sources
● Reference detect circuit
● Time interval counter (TIC)
● Watchdog timer (WDT), power supply monitor (PSM)
