M16CSLASH62P datasheet(32/349 Pages) MITSUBISHI

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Mitsubishi microcomputers

M16C / 62P Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Processor Mode

Under

development

Preliminary Specifications Rev.1.0

Specifications in this manual are tentative and subject to change.

Figure 1.6.2. PM1 Register

Processor mode register 1 (Note 1)

Symbol

Address

After reset

PM1

000516

0X0010002

Bit name

Function

Bit symbol

CS2 area switch bit

(data block enable bit)

0: 0800016 to 26FFF16

(block A disable)

1: 1000016 to 26FFF16

(block A enable)

PM10

(Note 2)

Port P37 to P34

function select bit

Note 1: Write to this register after setting the PRC1 bit in the PRCR register to “1” (write enable).

Note 2: For the mask ROM version, this bit must be set to “0” . For the flash memory version, the PM10 bit also

controls block A by enabling or disabling it. However, the PM10 bit is automatically set to “1” when the

FMR01 bit in the FMR0 register is “1” (CPU rewrite mode).

Note 3: Effective when the PM01 to PM00 bits are set to “012” (memory expansion mode) or “112” (microprocessor

mode).

Note 4: PM12 bit is set to “1” by writing a “1” in a program. (Writing a “0” has no effect.)

Note 5: When PM17 bit is set to “1” (with wait state), one wait state is inserted when accessing the internal RAM,

internal ROM, or an external area. If the CSiW bit (i = 0 to 3) in the CSR register is “0” (with wait state), the

CSi area is always accessed with one or more wait states regardless of whether the PM17 bit is set or not.

Where the RDY signal is used or multiplex bus is used, set the CSiW bit to “0” (with wait state).

Note 6: The access area is changed by the PM13 bit as listed in the table below.

PM17

Wait bit (Note 5)

0 : No wait state

1 : With wait state (1 wait)

Internal reserved area

expansion bit

PM13

See Note 6

Should be set to “0”.

0 : Watchdog timer interrupt

1 : Watchdog timer reset (Note 4)

Watchdog timer function

select bit

PM12

PM14

PM15

Memory area

expansion bit (Note 3)

0 0 : 1 Mbyte mode

(Do not expand)

0 1 : Must not be set

1 0 : Must not be set

1 1 : 4 Mbyte mode

b5 b4

PM11

(Note 3)

0 : Address output

1 : Port function

(b6)

Access area

Internal

RAM

ROM

Up to addresses 0040016 to 03FFF16 (15 Kbytes)

Up to addresses D000016 to FFFFF16 (192 Kbytes)

PM13=0

PM13=1

The entire area is usable

External

Addresses 0400016 to 07FFF16 are usable

Addresses 8000016 to CFFFF16 are usable

Addresses 0400016 to 07FFF16 are reserved

Addresses 8000016 to CFFFF16 are reserved

Reserved bit

M16C/62P Datasheet(PDF) 32 Page - Mitsubishi Electric Semiconductor

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