M306H2MC-XXXFP Datasheet, PDF (22/210 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

MITSUBISHI MICROCOMPUTERS
M306H2MC-XXXFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
with DATA ACQUISITION CONTROLLER
Processor mode register 0 (Note 1)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PM0
Address
000416
When reset
0016 (Note 2)
Bit symbol
Bit name
PM00
Processor mode bit
PM01
PM02
PM03
R/W mode select bit
Software reset bit
PM04
PM05
PM06
Multiplexed bus space
select bit
Port P40 to P43 function
select bit (Note 3)
Function
b1 b0
0 0: Single-chip mode
0 1: Memory expansion mode
1 0: Inhibited
1 1: Microprocessor mode
RW
0 : RD,BHE,WR
1 : RD,WRH,WRL
The device is reset when this bit is set
to “1”. The value of this bit is “0” when
read.
b5 b4
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 (Note 4)
0 : Address output
1 : Port function
(Address is not output)
PM07
BCLK output disable bit
0 : BCLK is output
1 : BCLK is not output
(Pin is left floating)
Notes 1: Set bit 1 of the protect register (address 000A16) to “1” when writing new
values to this register.
2: If the VCC voltage is applied to the CNVSS, the value of this register when
reset is 0316. (PM00 and PM01 both are set to “1”.)
3: Valid in microprocessor and memory expansion modes.
4: If the entire space is of multiplexed bus in memory expansion mode, chose an 8-
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 in used in each chip select.
Processor mode register 1 (Note)
b7 b6 b5 b4 b3 b2 b1 b0
0 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.
Reserved bit
Must always be set to “0”
Reserved bit
Must always be set to “0”
PM17
Wait bit
0 : No wait state
1 : Wait state inserted
Note : Set bit 1 of the protect register (address 000A16) to “1” when writing new
values to this register.
Figure 2.4.1 Processor mode registers
Rev. 1.0
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