3803L_08 Datasheet, PDF (13/26 Pages) Renesas Technology Corp – 8-bit MICROCOMPUTER 38000 Series

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Details about a program are described as follows. Please make sure to check there are some differences of memory size every product.
Note: Program checksum
When calculating the checksum of ROM area by a program, make sure to check the difference of areas for calculation.
When the unused area and reserved ROM area are included in target areas of replaced products, the read values are undefined and
calculated values of the checksum are also undefined.
(1) Standard mask ROM version Æ Spec. L mask ROM version
Basically, to change a program is not necessary. Refer to the technical update, Note on 3803 Group A/D Converter (TN-380-A067B/E
Rev.2.00).
(2) Standard flash memory version Æ Spec. L flash memory version
1. When using the addresses FFD4h to FFDAh, check the followings:
The codes written in these addresses are the ID codes of the Spec. L flash memory version when using a serial programmer. To input
this code is necessary as the ID code for flash memory reprogramming by a serial programmer. Check the above only when using a
serial programmer because the addresses can be executed as an instruction.
2. The bits 7 to 2 of the address FFDBh are the protect set bits of the Spec. L flash memory version when using a parallel programmer.
When the set condition is not unexpected, to change a program is necessary. Since the protect set bits do not affect when using a
serial programmer, there is no problem. This address can be executed as an instruction same as the addresses FFD4h to FFDAh.
3. When accessing the addresses 0FE0h to 0FEFh, to change a program not to access these addresses is necessary.
4. Nothing is assigned on the addresses 0FFEh and 0FFFh of Spec. L flash memory version. To change a program is not necessary
even if programming in standard flash memory version is performed.
5. To change a program is necessary when the oscillation stabilization time after the STP instruction is released is less than 100 μ sec in
stop mode. Set 100 μ sec or more by the oscillation stabilization time setting function after the STP instruction which uses timer 1 is
released.
6. When using CPU rewrite mode, to change general processes regarding CPU rewrite mode is necessary.
(3) Spec. H mask ROM version Æ Spec. L mask ROM version
Basically, to change a program is not necessary. Refer to the technical update, Note on 3803 Group A/D Converter (TN-380-A067B/E
Rev.2.00).
13 ^{©2008. Renesas Technology Corp., All rights reserved.}
REJ99B0048-0401
Rev.4.01 Date: Jul.02.08