M16C62 Datasheet, PDF (23/231 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Processor Mode
Mitsubishi microcomputers
M16C / 62 Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Processor mode register 0 (Note)
b7 b6 b5 b4 b3 b2 b1 b0
00 0 0
0
Symbol
PM0
Address
000416
When reset
0016
Bit symbol
Bit name
PM00
Processor mode bit
PM01
Reserved bit
Function
b1 b0
0 0: Single-chip mode
0 1: Inhibited
1 0: Inhibited
1 1: Inhibited
Must always be set to “0”
RW
PM03
Software reset bit
Reserved bit
The device is reset when this bit
is set to “1”. The value of this bit
is “0” when read.
Must always be set to “0”
Note: Set bit 1 of the protect register (address 000A16) to “1” when writing new
values to this register.
Processor mode register 1 (Note 1)
b7 b6 b5 b4 b3 b2 b1 b0
0 00
0
Symbol
PM1
Address
000516
When reset
00000XX02
Bit symbol
Bit name
Function
RW
Reserved bit
Must always be set to “0”
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns
out to be indeterminate.
PM13
Internal reserved area
expansion bit (Note 2)
0: The same internal reserved
area as that of M16C/60 and
M16C/61 group
1: Expands the internal RAM area
and internal ROM area to 23 K
bytes and to 256K bytes
respectively. (Note 2)
Reserved bit
Must always be set to “0”
PM17
Wait bit
0 : No wait state
1 : Wait state inserted
Note 1: Set bit 1 of the protect register (address 000A16) to “1” when writing new values to
this register.
Note 2: Be sure to set this bit to 0 except products whose RAM size and ROM size exceed
15K bytes and 192K bytes respectively.
In using M30625MG/FG, a product having a RAM of more than 15K bytes and a
ROM of more than 192K bytes, set this bit to 1 at the beginning of user program.
Specify D000016 or a subsequent address, which becomes an internal ROM area
if PM13 is set to 0 at the time reset is revoked, for the reset vector table of user
program.
Figure 1.8.1. Processor mode register 0 and 1
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