R0K572030S000BE Renesas Electronics America, R0K572030S000BE Datasheet - Page 717

Manufacturer Part Number

R0K572030S000BE

KIT DEV FOR SH7203

Manufacturer

Renesas Electronics America

Renesas Starter Kits (RSK)r

CPU Board, LCD Module, E10A-Lite Emulator, Cable, QuickStart Guide and CD-ROM

Silicon Manufacturer

Kit Contents

Silicon Family Name

Silicon Core Number

R5S72030W200FP

Tool / Board Applications

General Purpose MCU, MPU, DSP, DSC

Mcu Supported Families

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

For Use With/related Products

Lead Free Status / Rohs Status

5. The counter stops at the value of H'00.

6. Before changing WTCNT after execution of the frequency change instruction, always confirm

1. Set the WT/IT bit in WTCSR to 1, the type of count clock in the CKS[2:0] bits in WTCSR,

2. Set the TME bit in WTCSR to 1 to start the count in watchdog timer mode.

3. While operating in watchdog timer mode, rewrite the counter periodically to H'00 to prevent

4. When the counter overflows, the WDT sets the WOVF flag in WRCSR to 1, and the

5. If the RSTE bit in WRCSR is set to 1, a signal to reset the inside of this LSI can be generated

6. When a WDT overflow reset is generated simultaneously with a reset input on the RES pin,

that the value of WTCNT is H'00 by reading from WTCNT.

whether this LSI is to be reset internally or not in the RSTE bit in WRCSR, the reset type if it

is generated in the RSTS bit in WRCSR, and the initial value of the counter in WTCNT.

the counter from overflowing.

WDTOVF signal is output externally (figure 13.4). The WDTOVF signal can be used to reset

the system. The WDTOVF signal is output for 64 × Pφ clock cycles.

simultaneously with the WDTOVF signal. Either power-on reset or manual reset can be

selected for this interrupt by the RSTS bit in WRCSR. The internal reset signal is output for

128 × Pφ clock cycles.

the RES pin reset takes priority, and the WOVF bit in WRCSR is cleared to 0.

Using Watchdog Timer Mode

Rev. 3.00 Sep. 28, 2009 Page 685 of 1650

Section 13 Watchdog Timer (WDT)

REJ09B0313-0300