HD64F3644DV Renesas Electronics America, HD64F3644DV Datasheet - Page 105

• Manufacturer Part Number: HD64F3644DV
• Description: IC H8/3644 MCU FLASH 64QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644DV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Connecting a Ceramic Resonator: Figure 4.4 shows a typical method of connecting a ceramic
resonator.
Notes on Board Design: When generating clock pulses by connecting a crystal or ceramic
resonator, pay careful attention to the following points.
Avoid running signal lines close to the oscillator circuit, since the oscillator may be adversely
affected by induction currents. (See figure 4.5.)
The board should be designed so that the oscillator and load capacitors are located as close as
possible to pins OSC
To be avoided
OSC
OSC
Figure 4.4 Typical Connection to Ceramic Resonator
1
and OSC
Figure 4.5 Board Design of Oscillator Circuit
C
C
1
2
2
1
2
.
R
f
C
C
Signal A Signal B
1
2
R = 1 M
C = 30 pF ±10%
C = 30 pF ±10%
Ceramic resonator: Murata
1
2
f
Rev. 6.00 Sep 12, 2006 page 83 of 526
Section 4 Clock Pulse Generators
OSC
OSC
±20%
1
2
REJ09B0326-0600