ANALOG DEVICES ADuC831: Errata Sheet (Rev B1 2002-11-01-)

About this manual

The Analog Devices ADuC831 is a Multi-Channel 12-bit ADC/DAC with an embedded FLASH MCU. This Errata Sheet (Revision B.1) details specific known issues affecting silicon functionality and provides recommended work-arounds for users.

Four specific anomalies are documented: variations in the number of ADC clocks required during pipelined mode at low voltages; unintended Power-On-Reset events when using the Time Interval Counter to wake from power-down; momentary output spikes on DACs when clearing bits in buffered mode; and incorrect operation of PUSH/POP instructions for direct addresses less than 80H when the extended stack pointer is enabled.

What's inside

• Errata Sheet
• ADC Clocks in Pipelined Mode
• Time Interval Counter Power Down
• DAC Clear Bit Functionality
• Extended Stack Pointer Push and Pop
• Work-Arounds
• Silicon Revisions

Frequently asked questions

What is the revision number of this errata sheet?

The document is Revision B.1, dated November 2002.

Does the low voltage ADC clock issue have a work-around?

No, there is no work-around provided for this specific issue.

How can users detect if a wake-up from power-down caused a reset due to the TIC issue?

Users should set a bit in dataflash prior to powerdown and monitor it at the start of code execution.

What is the recommended work-around for DAC output spikes when clearing bits?

To force the output to OV, write 0000H to the corresponding DAC data registers.