HD64F2638WF20J Renesas Electronics America, HD64F2638WF20J Datasheet - Page 962

• Manufacturer Part Number: HD64F2638WF20J
• Description: IC H8S MCU FLASH 256K 128-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2638WF20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, I²C, 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 22A Clock Pulse Generator
(H8S/2636 Group, H8S/2638 Group, H8S/2630 Group)
22A.5 Medium-Speed Clock Divider
The medium-speed clock divider divides the system clock to generate φ/2, φ/4, φ/8, φ/16, and φ/32.
22A.6 Bus Master Clock Selection Circuit
The bus master clock selection circuit selects the system clock (φ) or one of the medium-speed
clocks (φ/2, φ/4, or φ/8, φ/16, and φ/32) to be supplied to the bus master, according to the settings
of the SCK2 to SCK0 bits in SCKCR.
22A.7 Subclock Oscillator
Connecting 32.768kHz Quartz Oscillator (U Mask, W Mask): To supply a clock to the
subclock divider, connect a 32.768kHz quartz oscillator, as shown in figure 22A-8. See section
22A.3.1, “Notes on Board Design” for notes on connecting quartz oscillators.
Figure 22A-9 shows the equivalence circuit for a 32.768kHz oscillator.
Page 912 of 1458
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Figure 22A-8 Example Connection of 32.768kHz Quartz Oscillator
Figure 22A-9 Equivalence Circuit for 32.768kHz Oscillator
OSC2
OSC1
L
s
C
s
C
o
C
C
1
2
C
R
1
s
=C
2
=15pF (typ)
H8S/2639, H8S/2638, H8S/2636,
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
C
R
f
w
s
s
= 1.5 pF (typ.)
= 14 kΩ (typ.)
= 32.768 kHz
OSC2
May 28, 2010