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
(EN)
