H8S2110B RENESAS [Renesas Technology Corp], H8S2110B Datasheet - Page 457

• Manufacturer Part Number: H8S2110B
• Description: Renesas 16-Bit Single-Chip Microcomputer Renesas H8S Family/H8S/2100 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

17.6
The flash memory is connected to the CPU via a 16-bit data bus, enabling byte data and word data
to be accessed in a single state. Even addresses are connected to the upper 8 bits and odd addresses
are connected to the lower 8 bits. Note that word data must start from an even address.
In normal mode (mode 3), up to 56 kbytes of ROM can be used.
Table 17.3 Operating Modes and ROM
17.7
An on-board programming mode is used to perform on-chip flash memory programming, erasing,
and verification. This LSI has two on-board programming modes: boot mode and user program
mode. Table 17.4 shows pin settings for boot mode. In user program mode, operation by software
is enabled by setting control bits. For details on flash memory mode transitions, see figure 17.2.
Table 17.4 On-Board Programming Mode Settings
Note: * Can be used as an I/O port after the boot mode activation.
Operating Modes
MCU Operating
Mode
Mode 2
Mode 3
Mode Setting
Boot mode
User program
mode
Operating Modes
On-Board Programming Modes
Mode 2 (advanced mode)
Mode 3 (normal mode)
CPU Operating
Mode
Advanced
Normal
Mode
Single-chip mode
Single-chip mode
MD1
0
1
1
MD0
0
0
1
Rev. 2.00 Mar 21, 2006 page 419 of 518
Mode Pins
MD1
1
1
P92
1*
MD0
0
1
P91
1*
REJ09B0299-0200
On-Chip ROM
Enabled
(64 kbytes)
Enabled
(56 kbytes)
Section 17 ROM
P90
1*