HD6413007F20 Renesas Electronics America, HD6413007F20 Datasheet - Page 443

• 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: -

12.1
The H8/3006 and H8/3007 have an on-chip watchdog timer (WDT). The WDT has two selectable
functions: it can operate as a watchdog timer to supervise system operation, or it can operate as an
interval timer. As a watchdog timer, it generates a reset signal for the H8/3006 and H8/3007 chip
if a system crash allows the timer counter (TCNT) to overflow before being rewritten. In interval
timer operation, an interval timer interrupt is requested at each TCNT overflow.
12.1.1
WDT features are listed below.
• Selection of eight counter clock sources
• Interval timer option
• Timer counter overflow generates a reset signal or interrupt.
• Watchdog timer reset signal resets the entire H8/3006 and H8/3007 internally, and can also be
φ/2, φ /32, φ /64, φ /128, φ /256, φ /512, φ /2048, or φ /4096
The reset signal is generated in watchdog timer operation. An interval timer interrupt is
generated in interval timer operation.
output externally.
The reset signal generated by timer counter overflow during watchdog timer operation resets
the entire H8/3006 and H8/3007 internally. An external reset signal can be output from the
RESO pin to reset other system devices simultaneously.
Overview
Features
Section 12 Watchdog Timer
Rev.5.00 Sep. 12, 2007 Page 413 of 764
12. Watchdog Timer
REJ09B0396-0500