M30302MC-XXXFP データシートの表示（PDF） - MITSUBISHI ELECTRIC

部品番号

コンポーネント説明

メーカー

M30302MC-XXXFP

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

Processor Mode

Mitsubishi microcomputers

M16C / 30 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Figure 1.7.1 shows the processor mode register 0 and 1.

Figure 1.7.2 shows the memory maps in each processor modes.

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: Must not be set

1 1: Microprocessor mode

RW

PM02

R/W mode select bit

0 : RD,BHE,WR

1 : RD,WRH,WRL

PM03

PM04

PM05

Software reset bit

Multiplexed bus space

select bit

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 (Note4)

PM06

Port P40 to P43 function

select bit (Note 3)

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)

Note 1: Set bit 1 of the protect register (address 000A16) to “1” when writing new

values to this register.

Note 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”.)

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-

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.

P31 to P37 become a port if the entire space multiplexed bus is chosen, so only 256 bytes can

be used in each chip select.

Processor mode register 1 (Note)

b7 b6 b5 b4 b3 b2 b1 b0

00 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”

Reserved bit

Must always be set to “0”

Reserved bit

PM17

Wait bit

Must always be set to “0”

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 1.7.1. Processor mode register 0 and 1

22

Share Link: