D12674RVFQ33D Renesas Electronics America, D12674RVFQ33D Datasheet - Page 707

• Manufacturer Part Number: D12674RVFQ33D
• Description: MCU 3V 0K I-TEMP 144-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of D12674RVFQ33D

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: IrDA, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 103
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: HD6412674RVFQ33D; HD6412674RVFQ33D

14.4.2
To use the WDT as an interval timer, set the WT/IT bit to 0 and TME bit in TCSR to 1.
When the WDT is used as an interval timer, an interval timer interrupt (WOVI) is generated each
time the TCNT overflows. Therefore, an interrupt can be generated at intervals.
When the TCNT overflows in interval timer mode, an interval timer interrupt (WOVI) is requested
at the same time the OVF bit in the TCSR is set to 1.
WDTOVF signal
Internal reset signal *
Legend:
WT/IT
TME
Notes: 1. If TCNT overflows when the RSTE bit is set to 1, an internal reset signal is generated.
: Timer mode select bit
: Timer enable bit
2. 130 states when the RSTE bit is cleared to 0.
Interval Timer Mode
H'FF
H'00
TCNT count
WT/IT=1
TME=1
1
Figure 14.2 Operation in Watchdog Timer Mode
H'00 written
to TCNT
WDTOVF and
internal reset are
generated
Overflow
132 states *
WOVF=1
518 states
Rev. 3.00 Mar 17, 2006 page 655 of 926
2
WT/IT=1
TME=1
Section 14 Watchdog Timer
REJ09B0283-0300
H'00 written
to TCNT
Time