HD6413007F20 Renesas Electronics America, HD6413007F20 Datasheet - Page 453

• Manufacturer Part Number: HD6413007F20
• Description: IC H8 MCU ROMLESS 5V 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD6413007F20

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 35
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

12.3.4
The WRST bit in RSTCSR is valid when bits WT/IT and TME are both set to 1 in TCSR.
Figure 12.7 shows the timing of setting of WRST and the internal reset timing. The WRST bit is
set to 1 when TCNT overflows and OVF is set to 1. At the same time an internal reset signal is
generated for the entire H8/3006 and H8/3007 chip. This internal reset signal clears OVF to 0, but
the WRST bit remains set to 1. The reset routine must therefore clear the WRST bit.
12.4
During interval timer operation, an overflow generates an interval timer interrupt (WOVI). The
interval timer interrupt is requested whenever the OVF bit is set to 1 in TCSR.
φ
TCNT
Overflow signal
OVF
WDT internal
reset
WRST
Timing of Setting of Watchdog Timer Reset Bit (WRST)
Interrupts
Figure 12.7 Timing of Setting of WRST Bit and Internal Reset
H'FF
H'00
Rev.5.00 Sep. 12, 2007 Page 423 of 764
12. Watchdog Timer
REJ09B0396-0500