Phytec kitCON-161CS, Hardware Manual

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Flash-Memory
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PHYTEC Meßtechnik GmbH 1999 L-356e_2
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6 Flash Memory
6.1 Internal Flash
The on-chip Flash module of the C161CS/JC/JI has a capacity of
256 kByte (organized in sectors of 16 kByte, 8 kByte, 8 kByte, and 7
times 32 kByte). It combines the advantages of a very fast read access
of 32-bit in one machine cycle with protected but simple writing algo-
rithms for programming and erase. Read accesses of code and data are
possible in any addressing mode, thus realizing the highest CPU
performance with fetch of double word instructions in a single cycle.
The lower 32 kBytes of the on-chip Flash memory of the 161CS/JC/JI
(sectors 0, 1, 2) can be mapped to either segment 0 (00’0000 H to
00’7FFF H ) or segment 1 (01’0000 H to 01’7FFF H ) during the
initialization phase to allow external memory to be used for additional
system flexibility. The upper 224 kBytes of the on-chip Flash memory
(sectors 3...9) are assigned to locations 01’8000 H to 04’FFFF H .
If you want to use the external RAM in combination with the internal
Flash you should modify your startup-code that chip select 1 (/CS1) is
active from 50000H. To ensure that /CS1 is connected with the
external RAM please check the setting of Jumper JP13.
Infineon Technologies offers a PC based software called “Memtool”
to program the internal flash memory.
Note:
The new derivatives of the C161CS/JC/JI offer the “single chip
mode”. If you want to start the bootstrap loader in this mode, you
have to pull down the /RD pin after reset. This feature is NOT imple-
mented on the actual board design.