M306H7MG-XXXFP Datasheet, PDF (279/329 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

M306H7MG-XXXFP/MC-XXXFP/FGFP
17. FLASH MEMORY VERSION
17. Flash Memory Version
17.1 Flash Memory Performance
The flash memory version is functionally the same as the mask ROM version except that it internally contains flash
memory.
The flash memory version has three modes−CPU rewrite, standard serial input/output, and parallel input/output
modes−in which its internal flash memory can be operated on.
Table 17.1 shows the outline performance of flash memory version (see Table 1.1 for the items not listed in Table
17.1.).
Table 17.1 Flash Memory Version Specifications
Item
Specification
Flash memory operating mode 3 modes (CPU rewrite, standard serial I/O, parallel I/O)
Erase block
User ROM area
Boot ROM area
Method for program
Method for erasure
Program, erase control method
Protect method
Number of commands
Number of program and erasure
See Figure 17.1
1 block (4 Kbytes) (Note 1)
In units of word
Block erase
Program and erase controlled by software command
Protected for each block by lock bit
7 commands
100 times
Data Retention
10 years
ROM code protection
Parallel I/O and standard serial I/O modes are supported.
Note 1: The boot ROM area contains a standard serial I/O mode rewrite control program which is stored
in it when shipped from the factory. This area can only be rewritten in parallel input/output mode.
Rev.2.10 Oct 25, 2006 Page 279 of 326
REJ03B0152-0210