DF2268FA13V Renesas Electronics America, DF2268FA13V Datasheet - Page 341

• Manufacturer Part Number: DF2268FA13V
• Description: IC H8S/2268 MCU FLASH 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2268FA13V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 13MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: LCD, POR, PWM, WDT
• Number Of I /o: 67
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

The watchdog timer (WDT) is an 8-bit timer that can generate an internal reset signal for this LSI
if a system crash prevents the CPU from writing to the timer counter, thus allowing it to overflow.
When this watchdog function is not needed, the WDT can be used as an interval timer. In interval
timer operation, an interval timer interrupt is generated each time the counter overflows.
The block diagram of the WDT is shown in figures 12.1 to 12.3.
12.1
• Selectable from eight counter input clocks for WDT_0
• Switchable between watchdog timer mode and interval timer mode
In watchdog timer mode
• If the counter in WDT_0 overflows, it is possible to select whether this LSI is internally reset
• If the counter in WDT_1 overflows, it is possible to select whether this LSI is internally reset
In interval timer mode
• If the counter overflows, the WDT generates an interval timer interrupt (WOVI).
WDT0105B_000020030700
Selectable from 16 counter input clocks for WDT_1
or not.
or the internal NMI interrupt is generated.
Features
Section 12 Watchdog Timer (WDT)
Rev. 5.00 Sep. 01, 2009 Page 289 of 656
Section 12 Watchdog Timer (WDT)
REJ09B0071-0500