R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1242
R4F24278NVFQU
Manufacturer Part Number
R4F24278NVFQU
Description
MCU 512K/48K 2.7-5.5V 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24278NVFQU.pdf
(1482 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R4F24278NVFQU
Manufacturer:
REALTEK
Quantity:
2 300
Company:
Part Number:
R4F24278NVFQU
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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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
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