DF2268FA13V Renesas Electronics America, DF2268FA13V Datasheet - Page 350

• 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: -

Section 12 Watchdog Timer (WDT)
12.3.3
The OVF flag is set to 1 if TCNT overflows during interval timer operation. At the same time, an
interval timer interrupt (WOVI) is requested. This timing is shown in figure 12.5.
12.3.4
With WDT_0 the WOVF bit in RSTCSR is set to 1 if TCNT overflows in watchdog timer mode.
If TCNT overflows while the RSTE bit in RSTCSR is set to 1, an internal is generated for the
entire chip. (WOVI interrupt is not generated.) This timing is illustrated in figure 12.6.
Rev. 5.00 Sep. 01, 2009 Page 298 of 656
REJ09B0071-0500
φ
TCNT
Overflow signal
(internal signal)
WOVF
Internal reset
signal
φ
OVF
TCNT
Overflow signal
(internal signal)
Timing of Setting Overflow Flag (OVF)
Timing of Setting Watchdog Timer Overflow Flag (WOVF)
Figure 12.6 Timing of WOVF Setting
Figure 12.5 Timing of OVF Setting
H'FF
H'FF
H'00
515/516 states (WDT_1)
518 states (WDT_0)
H'00