M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 44

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

Processor Mode
Figure 1.9.1. Processor mode register 0 and 1
Processor mode register 0 (Note 1)
Processor mode register 1 (Note 1)
b7
b7
b6
b6
0
b5
b5
b4
b4
b3
b3
b2
b2
b1
b1
b0
b0
0
Note 1: Set bit 1 of the protect register (address 000A
Note 2: If the V
Note 3: Valid in microprocessor and memory expansion modes.
Note 4: If the entire space is of multiplexed bus in memory expansion mode, choose an 8-
Note 1: Set bit 1 of the protect register (address 000A
Note 2: Be sure to set this bit to 0 except products whose RAM size and ROM size exceed 15K bytes
Note 3: With the processor running in memory expansion mode or in microprocessor mode, setting this
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns
out to be
Bit symbol
Bit symbol
Reserved bit
Reserved bit
PM13
PM14
PM15
PM17
PM01
PM02
PM03
PM04
PM05
PM06
PM07
PM00
Symbol
PM0
Symbol
PM1
values to this register.
reset is 03
bit width.The processor operates using the separate bus after reset is revoked, so the entire
space multiplexed bus cannot be chosen in microprocessor mode.
The higher-order address becomes a port if the entire space multiplexed bus is chosen, so
only 256 bytes can be used in each chip select.
and 192K bytes respectively.
In using M30624MG/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 D0000
to “0” at the time reset is revoked, for the reset vector table of user program.
bit provides the means of expanding the external memory area. (Normal mode: up to 1M byte,
expansion mode 1: up to 1.2 M bytes, expansion mode 2: up to 4M bytes)
For details, see “Memory space expansion functions”.
indeterminate.
CC
Processor mode bit
R/W mode select bit
Software reset bit
Multiplexed bus space
select bit
Port P4
select bit (Note 3)
BCLK output disable bit
Wait bit
Internal reserved area
expansion bit (Note 2)
Memory area
expansion bit (Note 3)
voltage is applied to the CNV
16
. (PM00 and PM01 both are set to “1”.)
16
0
Address
Address
Bit name
Bit name
0004
0005
to P4
or a subsequent address, which becomes an internal ROM area if PM13 is set
16
16
3
function
00
When reset
When reset
00000XX0
16
b5 b4
b5 b4
0 : Address output
1 : Port function
0 0 : Normal mode
0 1 : Inhibited
1 0 : Memory area expansion
1 1 : Memory area expansion
The device is reset when this bit is set
to “1”. The value of this bit is “0” when
read.
0 : BCLK is output
1 : BCLK is not output
0: The same internal reserved
1: Expands the internal RAM area
0 : No wait state
1 : Wait state inserted
0 0 : Multiplexed bus is not used
0 1 : Allocated to CS2 space
1 0 : Allocated to CS1 space
1 1 : Allocated to entire space (Note4)
Must always be set to “0”
Must always be set to “0”
b1 b0
0 0: Single-chip mode
0 1: Memory expansion mode
1 0: Inhibited
1 1: Microprocessor mode
0 : RD,BHE,WR
1 : RD,WRH,WRL
(Note 2)
(Address is not output)
SS
area as that of M16C/60 and
M16C/61 group
and internal ROM area to 23 K
bytes and to 256K bytes
respectively. (Note 2)
(Pin is left floating)
, the value of this register when
(Do not expand)
mode 1
mode 2
2
16
16
) to “1” when writing new
) to “1” when writing new values to this register.
Function
Function
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
R
R
W
W
Mitsubishi microcomputers
M16C / 62 Group
29