h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 81

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

3.1
This LSI supports single operating mode (mode 2). The operating mode is determined by the
setting of the mode pins (MD2 and MD1). Table 3.1 shows the MCU operating mode selection.
Table 3.1
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 cannot be used in this LSI. Modes 4 and 6 are specific modes. Thus, mode
pins should be set to enable mode 2 in normal program execution state. Mode pins should not be
changed during operation.
Mode 4 is a boot mode to program/erase the flash memory.
Mode 6 is on-chip emulation mode. This mode is controlled by the on-chip emulator (E10A) via
the JTAG interface, and on-chip emulation can be performed.
MCU Operating
Mode
2
Operating Mode Selection
MCU Operating Mode Selection
MD2 MD1
1
Section 3 MCU Operating Modes
1
CPU Operating
Mode
Advanced mode Extended mode with on-chip ROM
Description
Single-chip mode
Rev. 2.00, 03/04, page 49 of 534
On-Chip ROM
Enabled