Analog Devices ADuC841/ADuC842/ADuC843 Anomaly Sheet

About this manual

This is an anomaly sheet detailing known issues and workarounds for the ADuC841, ADuC842, and ADuC843 MicroConverter series. The document covers various silicon revisions (Rev. E and Rev. A) and applies to different package types including CSP, PQFP, and POFP.

What's inside

• Mode 0 UART Operation
• Extended Stack Pointer Usage
• I2C Slave Mode Interrupts
• SPI Interface Configuration
• Interrupts During Flash/EE Access
• PWM Operation Issues
• Watchdog Timer Behavior
• Level Triggered Interrupts

Frequently asked questions

What is the workaround for UART Mode 0 on these devices?

UART Mode 0 is nonfunctional on the ADuC841/ADuC842/ADuC843, and there are no workarounds provided.

How should code handle interrupts during DATAFLASH/EE read or write operations?

All interrupts must be disabled prior to a read or write operation by setting the EA bit to 0.

What is required if the Watchdog Timer generates an interrupt instead of a hardware reset?

A double write to the WDCON register must be executed inside the ISR, with the first write resetting the timer.