M16C65 datasheet(73/829 Pages) RENESAS

73 / 829 page

REJ09B0484-0030 Rev.0.30 Sep 09, 2008

Page 38 of 791

Under development

Preliminary Specification

This is a preliminary specification and is subject to change.

M16C/65 Group

4. Special Function Registers (SFRs)

Special Function Registers (SFRs)

4.1

SFRs

An SFR is a control register for a peripheral function. Table 4.1 to Table 4.15 list SFR information.

Notes:

X: Undefined

The blank areas are reserved. No access is allowed.

Software reset, watchdog timer reset, oscillation stop detection reset, voltage monitor 1 reset, and voltage monitor 2 reset do not affect the

following bits: Bits PM01 and PM00 in the PM0 register, VCR1 register, and VCR2 register.

Oscillation stop detection reset does not affect bits CM20, CM21, and CM27.

The state of bits in the RSTFR register depends on a reset type.

When the LVDAS bit of address OFS1 is 1 at hardware reset

This value shows the value after any of the following resets.

- Voltage monitor 0 reset

- When the LVDAS bit of address OFS1 is 0 at hardware reset

- Power-on reset

Table 4.1

SFR Information (1/16) (1)

Address

Symbol

After Reset

0000h

0001h

0002h

0003h

0004h

Processor Mode Register 0

PM0

0000 0000b (CNVSS pin is low)

0000 0011b (CNVSS pin is high) (2)

0005h

Processor Mode Register 1

PM1

0000 1000b

0006h

System Clock Control Register 0

CM0

0100 1000b

0007h

System Clock Control Register 1

CM1

0010 0000b

0008h

Chip Select Control Register

CSR

01h

0009h

External Area Recovery Cycle Control Register

EWR

XXXX XX00b

000Ah

Protect Register

PRCR

00h

000Bh

Data Bank Register

DBR

00h

000Ch

Oscillation Stop Detection Register

CM2

0X00 0010b (3)

000Dh

000Eh

000Fh

0010h

Program 2 Area Control Register

PRG2C

XXXX XX00b

0011h

External Area Wait Control Expansion Register

EWC

00h

0012h

Peripheral Clock Select Register

PCLKR

0000 0011b

0013h

0014h

0015h

Clock Prescaler Reset Flag

CPSRF

0XXX XXXXb

0016h

0017h

0018h

Reset Source Determine Register

RSTFR

XX00 001Xb (hardware reset) (4)

0019h

Voltage Detection 2 Circuit Flag Register

VCR1

0000 X000b (2)

001Ah

Voltage Detection Circuit Operation Enable Register

VCR2

000X 0000b (2), (5)

001X 0000b (2), (6)

001Bh

Chip Select Expansion Control Register

CSE

00h

001Ch

PLL Control Register 0

PLC0

0X01 X010b

001Dh

001Eh

Processor Mode Register 2

PM2

XX00 0X01b

001Fh

M16C65 Datasheet(PDF) 73 Page - Renesas Technology Corp

M16C65 Datasheet(HTML) 73 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL