HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 388

• Manufacturer Part Number: HD64F3026X25
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3026X25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 11 Watchdog Timer
11.3.4
The WRST bit in RSTCSR is valid when bits WT/
Figure 11.7 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 H8/3024 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.
Rev. 2.00 Sep 20, 2005 page 348 of 800
REJ09B0260-0200
TCNT
Overflow signal
OVF
WDT internal
reset
WRST
Timing of Setting of Watchdog Timer Reset Bit (WRST)
Figure 11.7 Timing of Setting of WRST Bit and Internal Reset
H'FF
H'00
I T
and TME are both set to 1 in TCSR.