M16C Datasheet, PDF (231/262 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Preliminary Specifications REV.B
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M16C / 6N Group
Parallel I/O Mode
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Address
The M16C/6N (with on-chip flash memory) has word- and byte modes which are switched over by the BYTE
pin.
When the BYTE pin is high, the 16-bit data bus is selected and the memory is accessed in 16 bits. In this
case, addresses must always be specified by an even address. When the BYTE pin is low, the 8-bit data bus
is selected and the memory is accessed in 8 bits.
The user ROM is divided into blocks as shown in Figure 24-1. The block address referred to in this manual is
the maximum even address of each block.
0C000016
Block 6 : 64K byte
0D000016
Block 5 : 64K byte
0E000016
Block 4 : 64K byte
Type No.
M306N0FGT
Flash memory
start address
0C000016
0F000016
Block 3 : 32K byte
0F800016
0FA00016
0FC00016
0FFFFF16
Block 2 : 8K byte
Block 1 : 8K byte
Block 0 : 16K byte
User ROM area
Figure 24-1. Block diagram of on-chip flash memory
Note 1: The boot ROM area can be rewritten in
only parallel input/output mode. (Access
to any other areas is inhibited.)
Note 2: To specify a block, use the maximum
address in the block that is an even
address.
0FE00016
0FFFFF16
8K byte
Boot ROM area
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