HD6417708RF100A Renesas Electronics America, HD6417708RF100A Datasheet - Page 202

• Manufacturer Part Number: HD6417708RF100A
• Description: IC SUPERH MPU ROMLESS 144LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417708RF100A

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: EBI/EMI, SCI, SmartCard
• Peripherals: POR, WDT
• Number Of I /o: 8
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 3.15 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Ram Size: -
• Program Memory Size: -
• Data Converters: -

9.10.3
1. Set the WT/IT bit in the WTCSR register to 1, set the reset type in the RSTS bit, set the type of
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 WTCSR to 1 and generates the
9.10.4
When operating in interval timer mode, interval timer interrupts are generated at every overflow of
the counter. This enables interrupts to be generated at set periods.
1. Clear the WT/IT bit in the WTCSR register to 0, set the type of count clock in the CKS2–
2. Set the TME bit in WTCSR to 1 to start the count in interval timer mode.
3. When the counter overflows, the WDT sets the IOVF flag in WTCSR to 1 and an interval
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count clock in the CKS2–CKS0 bits, and set the initial value of the counter in the WTCNT
counter.
the counter from overflowing.
type of reset specified by the RSTS bit. The counter then resumes counting.
CKS0 bits, and set the initial value of the counter in the WTCNT counter.
timer interrupt request is sent to INTC. The counter then resumes counting.
Using Watchdog Timer Mode
Using Interval Timer Mode