Details Of Operating Modes; Single-Chip Mode; Boot Mode; Boot Mode (Sci) - Renesas RX100 Series User Manual

RX13T Group
3.3

Details of Operating Modes

3.3.1

Single-Chip Mode

In this mode, all I/O ports can be used as general input/output ports, peripheral function input/output, or interrupt input
pins.
The chip starts up in single-chip mode if the high level is on the MD pin on release from the reset state.
3.3.2

Boot Mode

In this mode, the on-chip flash memory modifying program (boot program) stored in a dedicated area within the MCU
operates. The on-chip flash memory (ROM) can be modified from outside the MCU by using a universal asynchronous
receiver/transmitter (SCI1). For details, see section 31, Flash Memory (FLASH) .
When a reset is released while the MD pin is low, boot mode is selected.
3.3.2.1

Boot Mode (SCI)

When a reset is released while the MD pin is low, boot mode (SCI) is selected. For details on boot mode (SCI), refer to
section 31.8.1, Boot Mode (SCI Interface) .
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
3. Operating Modes
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