DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 661

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

19.2.2
Circuit Configuration
An external clock signal can be input as shown in the examples in figure 19.5. The external clock
is input from the EXTAL pin. If the XTAL pin is left open, the stray capacitance should not
exceed 10 pF. If the stray capacitance at the XTAL pin exceeds 10 pF in configuration a, use
configuration b instead and hold the clock high in standby mode.
External Clock Input
Avoid
C
C
EXTAL
XTAL
EXTAL
XTAL
L2
L1
Figure 19.4 Example of Incorrect Board Design
Figure 19.5 External Clock Input (Examples)
b. Complementary clock input at XTAL pin
a. XTAL pin left open
Signal A
74HC04
Open
Signal B
Rev. 3.00 Sep 27, 2006 page 633 of 872
Section 19 Clock Pulse Generator
External clock input
External clock input
XTAL
EXTAL
H8/3048B Group
REJ09B0325-0300