H8S2282 Datasheet, PDF (448/615 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

Section 16 Flash Memory (F-ZTAT Version) [H8S/2282 Group]
Internal address bus
Internal data bus (16 bits)
FLMCR1
FLMCR2
EBR1
EBR2
RAMER
FLPWCR
Bus interface/controller
Flash memory
(128 kbytes)
Operating
mode
FWE pin
Mode pin
Legend:
FLMCR1: Flash memory control register 1
FLMCR2: Flash memory control register 2
EBR1: Erase block register 1
EBR2: Erase block register 2
RAMER: RAM emulation register
FLPWCR: Flash memory power control register
Figure 16.1 Block Diagram of Flash Memory
16.2 Mode Transitions
When the mode pins and the FWE pin are set in the reset state and a reset-start is executed, this
LSI enters an operating mode as shown in figure 16.2. 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 16.1.
Rev. 3.00 Sep 26, 2006 page 416 of 580
REJ09B0148-0300