Analog Devices Errata824 A1 Datasheet

MicroConverter®, Dual-Channel

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Errata Sheet

A. This Errata sheet represents the known bugs, anomalies and work-arounds for the ADuC824 MicroConverter.

B. The Errata listed, apply to all ADuC824 packaged material branded as follows :

ADUC824BS
Date Stamp AD Logo
Lot Number

C. Analog Devices Inc. is committed, through future silicon revisions to continuously improve silicon functionality.

Analog Devices Inc. will use its best endeavors to ensure that these future silicon revisions remain compatible with
your present software/systems implementing the recommended work-arounds outlined in this document.

16&24 bit ADCs with Embedded FLASH MCU

ADuC824

D. ADuC824 Silicon Errata Sheet Revision History :

Revision Date : Relevance Silicon Status # of Bugs Reported

1.0 Dec. `00 All Silicon branded Released 1 - 824_01
ADUC824BS

REV. 1.00 Dec.‘00

Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.

®

MicroConverter is a Trademark of Analog Devices, Inc.

One T ec hnology Wa y , P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
T el: 781/329-4700 World Wide W eb Site: http://www.analog.com
Fax: [phone] Analog Devices, Inc., 2000

ADuC824

# 824_01. INDIRECT ADDRESSING MODE- :

Background: In indirect addressing the instruction specifies a register which contains the address of

the operand. Both internal and external RAM can be indirectly addressed.
eg. MOV A, @R0.

Issue: The following Special Function Registers (SFRs) cannot be read using indirect

addressing modes: ADCMODE, ADC0CON, ADC1CON, SF, ICON, PSMCON,
ADCSTAT, ADC0L/M/H, ADC1L/H, OF0L/M/H, OF1L/H, GN0L/M/H,
GN1L/H, DACL/H, DACCON.

Work-Around : Instead of executing the indirectly addressed read instruction as

MOV @Ri, ADCSTAT
It should instead be executed as
MOV A, ADCSTAT
MOV @Ri, A

Related Issues : Reading, using indirect addressing, functions correctly for all SFRs other than those

mentioned above.
Writing, using indirect addressing, functions correctly for all SFRs including those

mentioned above.

Silicon - Errata Sheet

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REV. 1.00 Dec.’00