R5F2L3ACBNFP datasheet(88/848 Pages) RENESAS

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5. Resets

REJ09B0441-0010 Rev.0.10

Jul 30, 2008

Page 52 of 809

Under development Preliminary specification

Specifications in this manual are tentative and subject to change.

R8C/L35A Group, R8C/L36A Group, R8C/L38A Group, R8C/L3AA Group,

R8C/L35B Group, R8C/L36B Group, R8C/L38B Group, R8C/L3AB Group

5.1.3

Option Function Select Register (OFS)

Notes:

1. If the block including the OFS register is erased, the OFS register value is set to FFh.

2. The same level of the voltage detection 0 level selected by bits VDSEL0 and VDESL1 is set in both functions of

voltage monitor 0 reset and power-on reset.

3. To use power-on reset, set the LVDAS bit to 0 (voltage monitor 0 reset enabled after reset).

The OFS register is allocated in the flash memory. Write to this register with a program.

After writing, do not write additions to this register.

LVDAS Bit (Voltage Detection 0 Circuit Start Bit)

The Vdet0 voltage to be monitored by the voltage detection 0 circuit is selected by bits VDSEL0 and VDSEL1.

Address 0FFFFh

Bit

b6b5b4

b3b2

b1b0

Symbol CSPROINI

LVDAS

VDSEL1 VDSEL0 ROMCP1 ROMCR

—

WDTON

When shipping

111

(Note 1)

Bit

Symbol

Bit Name

Function

R/W

WDTON

Watchdog timer start select bit

0: Watchdog timer automatically starts after reset

1: Watchdog timer is stopped after reset

R/W

—

Reserved bit

Set to 1.

R/W

ROMCR

ROM code protect disable bit

0: ROM code protect disabled

1: ROMCP1 bit enabled

R/W

ROMCP1 ROM code protect bit

0: ROM code protect enabled

1: ROM code protect disabled

R/W

VDSEL0

Voltage detection 0 level select bit (2)

b5 b4

0 0: 3.80 V selected (Vdet0_3)

0 1: 2.85 V selected (Vdet0_2)

1 0: 2.35 V selected (Vdet0_1)

1 1: 1.90 V selected (Vdet0_0)

R/W

VDSEL1

R/W

LVDAS

Voltage detection 0 circuit start bit (3)

0: Voltage monitor 0 reset enabled after reset

1: Voltage monitor 0 reset disabled after reset

R/W

CSPROINI Count source protection mode

after reset select bit

0: Count source protection mode enabled after reset

1: Count source protection mode disabled after reset

R/W

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