R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1242

• 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

Section 25 Clock Pulse Generator
Table 25.2 Crystal Resonator Characteristics
25.2.2
An external clock signal can be input as shown in the examples in figure 25.4. If the XTAL pin is
left open, make sure that parasitic capacitance is no more than 10 pF. When the counter clock is
input to the XTAL pin, make sure that the external clock is held high in standby mode.
Table 25.3 shows the input conditions for the external clock. When an external clock is used, the
range of its frequencies is from 8 to 20 MHz.
Page 1212 of 1448
Frequency (MHz)
R
C
S
0
max (pF)
max (Ω)
External Clock Input
Figure 25.4 Connection of External Clock Input (Examples)
EXTAL
EXTAL
XTAL
XTAL
8
80
7
(b) Counter clock input at XTAL pin
(a) XTAL pin left open
12
7
60
Open state
External clock input
External clock input
16
50
7
H8S/2427, H8S/2427R, H8S/2425 Group
REJ09B0565-0100 Rev. 1.00
20
40
7
Jul 22, 2010