R8C datasheet(33/106 Pages) RENESAS

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R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group 4. Special Function Registers (SFRs)

R01DS0011EJ0100 Rev.1.00

Page 33 of 102

Dec 21, 2010

Special Function Registers (SFRs)

An SFR (special function register) is a control register for a peripheral function. Tables 4.1 to 4.9 list SFR information

for R8C/LA5A Group, Tables 4.10 to 4.18 list SFR information for R8C/LA8A Group, and Table 4.19 lists the ID Code

Areas and Option Function Select Area. The description offered in this chapter is based on the R8C/LA8A Group.

X: Undefined

Notes:

1. Blank spaces are reserved. No access is allowed.

2. The CSPRO bit in the CSPR register is set to 1.

3. The CWR bit in the RSTFR register is set to 0 after power-on, voltage monitor 0 reset, or exit from power-off 0 mode. Hardware reset, software reset,

or watchdog timer reset does not affect this bit.

4. The reset value differs depending on the mode.

5. The CSPROINI bit in the OFS register is set to 0.

6. The LVDAS bit in the OFS register is set to 1.

7. The LVDAS bit in the OFS register is set to 0.

Table 4.1

SFR Information for R8C/LA5A Group (1) (1)

Address

Symbol

After Reset

0000h

0001h

0002h

0003h

0004h

Processor Mode Register 0

PM0

00h

0005h

Processor Mode Register 1

PM1

00h

00000100b (2)

0006h

System Clock Control Register 0

CM0

00100000b

0007h

System Clock Control Register 1

CM1

00100000b

0008h

Module Standby Control Register 0

MSTCR0

00h

0009h

System Clock Control Register 3

CM3

00h

000Ah

Protect Register

PRCR

00h

000Bh

Reset Source Determination Register

RSTFR

XXh (3)

000Ch

Oscillation Stop Detection Register

OCD

00000100b (4)

00h (4)

000Dh

Watchdog Timer Reset Register

WDTR

XXh

000Eh

Watchdog Timer Start Register

WDTS

XXh

000Fh

Watchdog Timer Control Register

WDTC

00111111b

0010h

Module Standby Control Register 1

MSTCR1

00h

0011h

0012h

0013h

0014h

0015h

0016h

0017h

0018h

0019h

001Ah

001Bh

001Ch

Count Source Protection Mode Register

CSPR

00h

10000000b (5)

001Dh

001Eh

001Fh

0020h

Power-Off Mode Control Register 0

POMCR0

XXXXXX00b

0021h

0022h

0023h

High-Speed On-Chip Oscillator Control Register 0

FRA0

00h

0024h

High-Speed On-Chip Oscillator Frequency Control Register 0

FRC0

When shipping

0025h

High-Speed On-Chip Oscillator Control Register 2

FRA2

00h

0026h

On-Chip Reference Voltage Control Register

OCVREFCR

00h

0027h

0028h

0029h

High-Speed On-Chip Oscillator 18 MHz Set Value Register 0

FR18S0

XXh

002Ah

High-Speed On-Chip Oscillator 18 MHz Set Value Register 1

FR18S1

XXh

002Bh

002Ch

002Dh

002Eh

002Fh

High-Speed On-Chip Oscillator Frequency Control Register 1

FRC1

When shipping

0030h

Voltage Monitor Circuit Control Register

CMPA

00h

0031h

Voltage Monitor Circuit Edge Select Register

VCAC

00h

0032h

0033h

Voltage Detect Register 1

VCA1

00001000b

0034h

Voltage Detect Register 2

VCA2

00h (6)

00100000b (7)

0035h

0036h

Voltage Detection 1 Level Select Register

VD1LS

00000111b

0037h

0038h

Voltage Monitor 0 Circuit Control Register

VW0C

1100X010b (6)

1100X011b (7)

0039h

Voltage Monitor 1 Circuit Control Register

VW1C

10001010b

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