R5F3640MNFB datasheet(70/398 Pages) RENESAS

70 / 398 page

REJ09B0392-0064 Rev.0.64

Oct 12, 2007

Page 49 of 373

Under development

Preliminary Specification

Specification in this preliminary version is subject to change.

M16C/64 Group

7. Processor Mode

Figure 7.2

PM1 Register

b6 b5 b4

Processor Mode Register 1 (1)

Symbol

PM1

Address

0005h

Bit Symbol

Bit Name

PM10

After Reset

00001000b

1. Write to this register after setting the PRC1 bit in the PRCR register to 1 (write enabled).

2. Bits PM10 and PM13 are automatically set to 1 while the FMR01 bit in the FMR0 register is set to 1 (CPU rewrite

mode).

3. Bits PM11, PM14, and PM 15 are effective when bits PM01 and PM00 are set to 01b (memory expansion mode) or 11b

(microprocessor mode).

4. The PM12 bit is set to 1 by writing a 1 in a program (writing a 0 has no effect).

The PM12 bit is automatically set to 1 when the CSPRO bit in the CSPR register is 1 (count source protection mode

enabled).

5. When the PM17 bit is set to 1 (wait state), one wait state is inserted when accessing the internal RAM or internal ROM.

When the PM17 bit is set to 1 and accesses an external area, set the CSiW bit in the CSR register (i = 0 to 3) to 0

(wait state).

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

Function

0 : CS2 (0E000h to 0FFFFh )

1 : Data flash (0E000h to 0FFFFh)

CS2 area switch bit

(data flash enable bit) (2)

PM11

PM12

PM13

Wait bit (5)

PM17

0 : No wait state

1 : Wait state (1 wait)

Memory area expansion bit (3)

b5 b4

0 : 1-Mbyte mode (no expansion)

1 : Do not set

0 : Do not set

1 : 4-Mbyte mode

0 : Address output

1 : Port function

Port P3_7 to P3_4 function

select bit (3)

Internal reserved area

expansion bit (2, 6)

(NOTE 6)

Watchdog timer function select

bit (4)

0 : Watchdog timer interrupt

1 : Watchdog timer reset

PM14

PM15

Internal

Access Area

External

Program ROM 1

RAM

Reserved bit

Set to 0

—

(b6)

PM13 = 1

Address 04000h to 0CFFFh are reserved

Address 80000h to CFFFFh are reserved

(in memory expansion mode)

The entire area is usable

PM13 = 0

Address 04000h to 0CFFFh are usable

Address 80000h to CFFFFh are usable

Note that 08000h to 0CFFFh are reserved when

PM10 is set to 1 during microprocessor mode.

Up to Addresses D0000h to FFFFFh (192 Kbytes)

Up to Addresses 00400h to 03FFFh (15 Kbytes)

NOTES :

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