M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 251

• Manufacturer Part Number: M30622MA-XXXFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
• Manufacturer: RENESAS [Renesas Technology Corp]

Description (Flash Memory Version)
236
Flash Memory
Figure 1.28.1. Block diagram of flash memory version
The M16C/62 (flash memory version) contains the DINOR (DIvided bit line NOR) type of flash memory that
can be rewritten with a single voltage of 5 V or 3.3 V. For this flash memory, three flash memory modes are
available in which to read, program, and erase: parallel I/O and standard serial I/O modes in which the flash
memory can be manipulated using a programmer and a CPU rewrite mode in which the flash memory can
be manipulated by the Central Processing Unit (CPU). Each mode is detailed in the pages to follow.
The flash memory is divided into several blocks as shown in Figure 1.28.1, so that memory can be erased
one block at a time. Each block has a lock bit to enable or disable execution of an erase or program
operation, allowing for data in each block to be protected.
In addition to the ordinary user ROM area to store a microcomputer operation control program, the flash
memory has a boot ROM area that is used to store a program to control rewriting in CPU rewrite and
standard serial I/O modes. This boot ROM area has had a standard serial I/O mode control program stored
in it when shipped from the factory. However, the user can write a rewrite control program in this area that
suits the user’s application system. This boot ROM area can be rewritten in only parallel I/O mode.
Flash memory
256 K byte
size
Flash memory
start address
0C0000
16
0C0000
0D0000
0E0000
0FA000
0FC000
0FFFFF
0F0000
0F8000
16
16
16
16
16
16
16
16
Block 6 : 64K byte
Block 1 : 8K byte
Block 4 : 64K byte
Block 3 : 32K byte
Block 2 : 8K byte
Block 0 : 16K byte
Block 5 : 64K byte
User ROM area
0FE000
0FFFFF
Note 1: The boot ROM area can be rewritten in
Note 2: To specify a block, use the maximum
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
16
16
only parallel input/output mode. (Access
to any other areas is inhibited.)
address in the block that is an even
address.
Boot ROM area
8K byte
Mitsubishi microcomputers
M16C / 62 Group