M306V2ME Datasheet, PDF (24/276 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

MITSUBISHI MICROCOMPUTERS
M306V2ME-XXXFP
M306V2EEFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY 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
Function
b1 b0
0 0: Single-chip mode
0 1: Memory expansion mode
1 0: Inhibited
1 1: Microprocessor mode
RW
PM02
PM03
PM04
PM05
R/W mode select bit
Software reset bit
Multiplexed bus space
select bit
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)
PM06
PM07
Port P40 to P43 function
select bit (Note 3)
BCLK output disable bit
0 : Address output
1 : Port function
(Address is not output)
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, choose 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 used in each chip select.
Figure 2.4.1 Processor mode register 0
Rev. 1.0
24