User guide

10
SmartBook for Renesas R8C/Tiny Microcontrollers
www.MightyMicons.com
first mode (E/W=0) is selected, the built in programming
kernel is transferred to the RAM area and then the
program control is shifted to this kernel. Without stopping
the CPU, any portion of the flash memory can be
reprogrammed. For this mode, the RAM area should be large
enough to keep the programming kernel.
In the second mode (E/W=1), you need not transfer the
programming kernel to the RAM. Keeping the programming control
in the flash memory itself, you can modify any other flash area. These
programming modes are also known as user programming modes. In addition,
in many of the R8C/Tiny devices, you can get the facility to configure two blocks
of 1K byte flash memory as the Data flash for maintaining reference data or table,
etc.
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In the second mode
(E/W=1), you need
not transfer the
programming
kernel to the
RAM. Keeping the programming
control in the flash memory itself,
you can modify any other
flash area.