HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 902

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 20 Flash Memory (0.35-μm F-ZTAT Version)
20.2
When the mode pins are set in the reset state and a reset-start is executed, this LSI enters an
operating mode as shown in figure 20.2. In user mode, flash memory can be read but not
programmed or erased.
The boot, user program and programmer modes are provided as modes to write and erase the flash
memory.
The differences between boot mode and user program mode are shown in table 20.1. Figure 20.3
shows boot mode. Figure 20.4 shows user program mode.
Rev.7.00 Mar. 18, 2009 page 834 of 1136
REJ09B0109-0700
Legend:
FLMCR1: Flash memory control register 1
FLMCR2: Flash memory control register 2
EBR1:
EBR2:
SYSCR:
Mode Transitions
Erase block register 1
Erase block register 2
System control register
FLMCR1
FLMCR2
SYSCR
EBR1
EBR2
Figure 20.1 Block Diagram of Flash Memory
Internal data bus (16 bits)
Internal address bus
Bus interface/controller
Flash memory
Operating
mode
Mode pins