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Internal Flash Memory
16-2
16.1 Overview
The MN1030F01K has 256 KB of internal flash memory for use as instruction memory in place of instruction
ROM. Using flash memory makes it easy to make changes to a stored program, which makes it possible to reduce
program development time and permits the creation of a highly flexible system.
16.2 Features
The features of the internal flash memory are described below.
■ Capacity: 256 KB
■ Permits batch erasure of entire area and erasure of individual 8 KB blocks.
■ 8-byte page program permits fast data writing.
■ Supports two flash memory overwrite modes (flash memory mode and on-board write mode).
■ On-board write mode includes mechanisms designed to prevent accidental erasure or writing of flash
memory.
16.3 Block Diagram
Fig. 16-3-1 shows the block diagram of flash memory and related blocks.
Fig. 16-3-1 Flash Memory Block Diagram
VDD VPP
NCE
Flash memory
NOE
NWE
E
FROM
MODE
NROMRST
PA [17:1]
TEST [3:0]
256 KB
VSS
PD [15:0]
CPU core
Control signals
Address
Instructions
Flash memory interface
Bus
controller
Flash
memory
write
controller
External pins
Address
Data
Control signals