Operating Modes; Operating Mode Types And Selection - Renesas RX100 Series User Manual

RX13T Group
3.

Operating Modes

3.1

Operating Mode Types and Selection

There are two types of operating-mode selection: one is be selected by the level on pins at the time of release from the
reset state, and the other is selected by software after release from the reset state.
Table 3.1 shows the relationship between levels on the mode-setting pins (MD) on release from the reset state and the
operating mode selected at that time. For details on each of the operating modes, see section 3.3, Details of Operating
Modes .
Table 3.1 Selection of Operating Modes by the Mode-Setting Pins
Mode-Setting Pin
1
MD*
Low
High
Note 1. Do not change the level on the MD pin while the MCU is operating.
The endian is selectable in single-chip mode. Endian is set by the MDE.MDE[2:0] bits in the option-setting memory. For
the correspondence between the setting and endian, see Table 3.2 .
Table 3.2 Selection of Endian
MDE.MDE[2:0] Bit Setting
000b
111b
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
Operating Mode
Boot mode (SCI)
Single-chip mode
Endian
Big endian
Little endian
3. Operating Modes
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