HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 957

• 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: -

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Crystal Resonator: Figure 22A-3 shows the equivalent circuit of the crystal resonator. Use a
crystal resonator that has the characteristics shown in table 22A-3. The crystal resonator frequency
should not exceed 20 MHz.
Table 22A-3 Crystal Resonator Parameters
Frequency (MHz)
R
C
Note on Board Design: When a crystal resonator is connected, the following points should be
noted:
Other signal lines should be routed away from the oscillator circuit to prevent induction from
interfering with correct oscillation. See figure 22A-4.
When designing the board, place the crystal resonator and its load capacitors as close as possible
to the XTAL and EXTAL pins.
REJ09B0103-0800 Rev. 8.00
May 28, 2010
S
0
max (pF)
max (Ω)
XTAL
Figure 22A-3 Crystal Resonator Equivalent Circuit
Figure 22A-4 Example of Incorrect Board Design
Avoid
4
120
7
C
C
L2
L1
L
Signal A Signal B
C
C
L
0
8
80
7
AT-cut parallel-resonance type
R
s
(H8S/2636 Group, H8S/2638 Group, H8S/2630 Group)
12
60
7
XTAL
EXTAL
EXTAL
Chip
Section 22A Clock Pulse Generator
16
50
7
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