M16C6KA_15 Datasheet, PDF (251/270 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Description

M16C/6KA Group
Prallel I/O mode
Parallel I/O mode
Parallel I/O mode is to input and output the software command, address and data in parallel to access the
on-chip flash memory (read, program, erase etc.).
Please use the specific device (programmer) supported for M16C/6KA Group. Referring to the guideline etc.
of each device manufacture for the usage.
User ROM area and boot ROM area
In parallel I/O mode, both user ROM area and boot ROM area showed in Fig.AB-1 can be reprogrammed.
The access method to both areas is the same.
The size of boot ROM area is 4K bytes. The addresses are allocated in 0FF00016– 0FFFFF16. Make sure
program and block erase operations are always performed within this address range. (Access to any location
outside this address range is prohibited.)
In the boot ROM area, erase block operation is applied to only one 4K bytes block. The boot ROM area has
had a standard serial I/O mode control program stored in it when shipped from Renesas factory. Therefore,
if the standard serial I/O mode is used, the rewriting to the boot ROM area is not necessary.
Rev.1.00 Jul 16, 2004 page 249 of 266
REJ03B0100-0100Z