HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 490

• Manufacturer Part Number: HD64F2638F20J
• Description: IC H8S MCU FLASH 256K 128-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2638F20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 12 Watchdog Timer
Page 440 of 1458
Internal
reset signal
Legend:
WT/IT:
TME:
Note: * The WOVF bit is set to 1 and then cleared to 0 by an internal reset.
Legend:
WT/IT:
TME:
Note: * The internal reset signal is generated only if the RSTE bit is set to 1.
Internal reset signal *
H'FF
H'00
Timer mode select bit
Timer enable bit
TCNT value
Timer mode select bit
Timer enable bit
WT/IT = 1
TME = 1
H'FF
H'00
Figure 12-4 (a) WDT0 Watchdog Timer Operation
Figure 12-4 (b) WDT1 Watchdog Timer Operation
TCNT value
WT/IT = 1
TME = 1
Write H'00
to TCNT
Write H'00
to TCNT
Internal reset is
generated
Internal reset
is generated
WOVF = 1*
Overflow
515/516 states
Overflow
WOVF = 1
518 states
WT/IT = 1
TME = 1
WT/IT = 1
TME = 1
H8S/2639, H8S/2638, H8S/2636,
Write H'00
to TCNT
Write H'00
to TCNT
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
Time
Time
May 28, 2010