R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1241

• Manufacturer Part Number: R4F24278NVFQU
• Description: MCU 512K/48K 2.7-5.5V 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of R4F24278NVFQU

• Core Processor: H8S/2600
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, Smart Card, SPI, SSU, UART/USART
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 98
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

H8S/2427, H8S/2427R, H8S/2425 Group
25.2
Clock pulses can be supplied by connecting a crystal resonator, or by input of an external clock.
25.2.1
A crystal resonator can be connected as shown in the example in figure 25.2. Select the damping
resistance R
crystal resonator is used, the range of its frequencies is from 8 to 20 MHz.
Figure 25.3 shows the equivalent circuit of the crystal resonator. Use a crystal resonator that has
the characteristics shown in table 25.2.
Table 25.1 Damping Resistance Value
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010
Frequency (MHz)
R
d
(Ω)
Oscillator
Connecting a Crystal Resonator
d
according to table 25.1. An AT-cut parallel-resonance type should be used. When a
Figure 25.2 Connection of Crystal Resonator (Example)
XTAL
EXTAL
XTAL
Figure 25.3 Crystal Resonator Equivalent Circuit
8
200
R
d
L
C
C
C
C
L
0
L1
L2
12
0
AT-cut parallel-resonance type
R
s
C
L1
= C
16
0
EXTAL
L2
= 10 to 22 pF
Section 25 Clock Pulse Generator
20
0
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