DF38602RFT10 Renesas Electronics America, DF38602RFT10 Datasheet - Page 107

• Manufacturer Part Number: DF38602RFT10
• Description: MCU 3V 16K 32-QFN
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H SLPr

Specifications of DF38602RFT10

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 10MHz
• Connectivity: I²C, IrDA, SCI, SSU
• Peripherals: POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F38602RFT10; HD64F38602RFT10

Figure 4.10 (1) shows an example measuring circuit with the negative resistance recommended by
the resonator manufacturer. Note that if the negative resistance of the circuit is less than that
recommended by the resonator manufacturer, it may be difficult to start the main oscillator.
If it is determined that oscillation does not occur because the negative resistance is lower than the
level recommended by the resonator manufacturer, the circuit must be modified as shown in figure
4.10 (2) through (4). Which of the modification suggestions to use and the capacitor capacitance
should be decided based upon evaluation results such as the negative resistance and the frequency
deviation.
Modification
point
Figure 4.10 Negative Resistance Measurement and Circuit Modification Suggestions
(3) Oscillator Circuit Modification Suggestion 2
(1) Negative Resistance Measuring Circuit
C2
C1
C2
C1
Negative resistance,
addition of -R
OSC1
OSC2
OSC1
OSC2
Modification
point
(2) Oscillator Circuit Modification Suggestion 1
(4) Oscillator Circuit Modification Suggestion 3
C1
Modification
point
Rev. 3.00 May 15, 2007 Page 73 of 518
C2
C2
C1
C3
Section 4 Clock Pulse Generators
REJ09B0152-0300
OSC1
OSC2
OSC1
OSC2