Datasheet

Section 20 Flash Memory (F-ZTAT Version)
Rev. 6.00 Mar. 18, 2010 Page 737 of 982
REJ09B0054-0600
4. When the RAMS bit in RAMER is set to 1, program/erase protection is enabled for all flash
memory blocks (emulation protection). In this state, setting the P1 or E1 bit in FLMCR1 to 1
does not cause a transition to program mode or erase mode.
5. A RAM area cannot be erased by execution of software in accordance with the erase
algorithm.
6. Block area EB0 contains the vector table. When performing RAM emulation, the vector table
is needed in the overlap RAM.
H'000000
H'001000
H'002000
H'003000
H'FFD000
H'FFDFFF
Flash memory
(EB0)
Flash memory
(EB0)
(EB1)
(EB2)
(EB3)
On-chip RAM
(4 kbytes)
On-chip RAM
(Shadow of
H'FFE000 to
H'FFDFFF)
Flash memory
(EB2)
On-chip RAM
(4 kbytes)
(EB3)
Normal memory map
RAM overlap memory map
Figure 20.10 Example of RAM Overlap Operation
20.8 Flash Memory Programming/Erasing
A software method using the CPU is employed to program and erase flash memory in the on-
board programming modes. Depending on the FLMCR1 setting, the flash memory operates in one
of the following four modes: Program mode, program-verify mode, erase mode, and erase-verify