A list of known bugs and workarounds for the ADuC824 MicroConverter
The Analog Devices ADuC824 is a 16/24-bit ADC with an embedded Flash MCU. This errata sheet details specific issues found in all silicon branded as ADUC824BS, including known bugs and anomalies.
A critical issue identified involves indirect addressing modes where certain Special Function Registers (SFRs) cannot be read correctly using this method. The document provides a workaround involving the use of the accumulator register to bypass these restrictions for specific registers like ADCSTAT.
This is Revision 1.0, dated December 2000, covering all silicon branded ADUC824BS.
The following SFRs cannot be read using indirect addressing: ADCMODE, ADCOCON, ADCICON, SF, ICON, PSMCON, ADCSTAT, ADCOL/M/H, ADCIL/H, OFOL/M/H, OFIL/H, GNOL/M/H, GNIL/H, DACL/H, and DACCON.