HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 484

• 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
WDT0 Input Clock Select
Bit 2
CKS2
0
1
Notes: 1. An overflow period is the time interval between the start of counting up from H'00 on the
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2. In the U-mask and W-mask versions, and H8S/2635 Group, φ in subactive and
Bit 1
CKS1
0
1
0
1
TCNT and the occurrence of a TCNT overflow.
subsleep modes operates as φSUB.
Bit 0
CKS0
0
1
0
1
0
1
0
1
Description
Clock
φ/2 *
φ/64 *
φ/128 *
φ/512 *
φ/2048 *
φ/8192 *
φ/32768 *
φ/131072 *
2
2
(initial value) 25.6 µs
2
2
2
2
2
2
Overflow Period *
819.2 µs
1.6 ms
6.6 ms
26.2 ms
104.9 ms
419.4 ms
1.68 s
1
(where φ = 20 MHz)
H8S/2639, H8S/2638, H8S/2636,
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
May 28, 2010