Datasheet

Rev. 3.00, 03/04, page 53 of 830
Section 3 MCU Operating Modes
3.1 Operating Mode Selection
This LSI supports one operating mode (mode 2). The operating mode is determined by the setting
of the mode pins (MD2, MD1, and MD0). Table 3.1 shows the MCU operating mode selection.
Table 3.1 MCU Operating Mode Selection
MCU Operating
Mode MD2 MD1 MD0
CPU Operating
Mode Description
2 1 1 0 Advanced Extended mode with on-chip ROM
Single-chip mode
Mode 2 is single-chip mode after a reset. The CPU can switch to extended mode by setting bit
EXPE in MDCR to 1.
Modes 0, 1, 3, 5, and 7 are not available in this LSI. Modes 4 and 6 are operating mode for a
special purpose. Thus, mode pins should be set to enable mode 2 in normal program execution
state. Mode pins should not be changed during operation.