h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 475

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

18.6
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 18.3 Operating Modes and ROM
18.7
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 18.4 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 18.2.
Table 18.4 On-Board Programming Mode Settings
Note:
MCU
Operating Mode
Mode 2
Mode 3
Mode Setting
Boot mode
User program mode
*
Operating Modes
On-Board Programming Modes
Can be used as an I/O port after the boot mode activation.
Operating Modes
CPU
Operating Mode Mode
Advanced
Normal
Mode 2 (advanced mode) 1
Mode 3 (normal mode)
Single-chip mode 1
Single-chip mode 1
MD1
0
1
MD1
Mode Pins
MD0
0
0
1
Rev. 1.00, 05/04, page 441 of 544
MD0 On-Chip ROM
0
1
P92
1*


Enabled (64 Kbytes)
Enabled (56 Kbytes)
P91
1*


P90
1*

