Datasheet

Section 20 Flash Memory (0.35-μm F-ZTAT Version)
Rev.7.00 Mar. 18, 2009 page 834 of 1136
REJ09B0109-0700
Module bus
Bus interface/controller
Flash memory
Operating
mode
EBR1
Internal address bus
Internal data bus (16 bits)
Mode pins
EBR2
SYSCR
FLMCR2
FLMCR1
Legend:
FLMCR1: Flash memory control register 1
FLMCR2: Flash memory control register 2
EBR1: Erase block register 1
EBR2: Erase block register 2
SYSCR: System control register
Figure 20.1 Block Diagram of Flash Memory
20.2 Mode Transitions
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.