TNV85A003AE Datasheet, PDF (1/3 Pages) Renesas Technology Corp – MPU/MCU

Date: Mar. 10, 2014
RENESAS TECHNICAL UPDATE
1753, Shimonumabe, Nakahara-ku, Kawasaki-shi, Kanagawa 211-8668 Japan
Renesas Electronics Corporation
Product
Category
MPU/MCU
Document
No.
TN-V85-A003A/E Rev.
1.00
Title
V850ES/Kx1, Kx1+ Restriction notification of Mask
ROM products
Information
Category
Technical Notification
Applicable
Product
V850ES/KF1
µPD703211
V850ES/KG1
µPD703215, MPD703215Y
V850ES/KG1+
µPD703313, µPD703313Y
Lot No.
All lot
Reference
Document
-V850ES/KF1 User’s manual :
Hardware (U16891E)
-V850ES/KG1 User’s manual:
Hardware (U16890E)
-V850ES/KG1+ User’s manual:
Hardware (U16894E)
-V850ES User’s manual
For Architecture (U15943E)
This document describes a new restriction of Mask ROM products as shown by “Applicable Product”.
1. Restriction:
Applicable Usage:
The usage which meets to (1) and (2) at the same timing is applicable to the restriction.
(1) The instruction codes which addresses 001FFFCH to 0020000H are executed continuously.
(2) Pipeline disorder (Note) is generated.
Note: The pipeline becomes disordered caused by the following factors.
1. Alignment hazard
2. Referencing execution result of load instruction
3. Referencing execution result of multiply instruction
4. Referencing execution result of LDSR instruction for EIPC and FEPC
5. Access of On-chip peripheral I/O register
For details of pipeline disordered, please see User’s manual “V850ES 32-Bit Microprocessor Core
Architecture” (U15943E).
Detail of Restriction:
In the case of Applicable Usage, CPU executes the wrong instruction code.
(Example) The pipeline disordered is generated by Alignment hazard:
In this case, the instruction b will not be executed correctly. And wrong instruction code is executed.
(c) 2014. Renesas Electronics Corporation. All rights reserved.
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