D12320VF25IV Datasheet, PDF (882/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 19 ROM
• PROM mode
Flash memory can be programmed/erased in PROM mode, using a PROM programmer, as
well as in on-board programming mode.
19.22.2 Overview
Block Diagram
Internal address bus
Internal data bus (16 bits)
FLMCR1
FLMCR2
EBR1
EBR2
RAMER
SYSCR2
Bus interface/controller
Flash memory
(512 kbytes)
Operating
mode
FWE pin
Mode pins
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
SYSCR2: System control register 2
Figure 19.59 Block Diagram of Flash Memory
Rev.6.00 Sep. 27, 2007 Page 850 of 1268
REJ09B0220-0600