R4F24568NVRFQV Renesas Electronics America, R4F24568NVRFQV Datasheet - Page 1238

• Manufacturer Part Number: R4F24568NVRFQV
• Description: MCU 256KB FLASH 48K 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of R4F24568NVRFQV

• Core Processor: H8S/2600
• Core Size: 16/32-Bit
• Speed: 32MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SSU, UART/USART, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 48K 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
• Eeprom Size: -

Section 23 Clock Pulse Generator
23.4
The PLL circuit for the USB module takes 8, 12, and 16 MHz clock signals from an oscillator and
generates the 48-MHz clock for the USB module through frequency-multiplication by 3, 4, or 6.
The frequency-multiplication factor is set by bits USSTC1 and USSTC0 in the USPLLCR. For
details on the USPLLCR, see section 23.1.3, USB PLL Control Register (USPLLCR).
When the USB is in use, make settings so that the system clock runs at or above 14 MHz. The
settings listed below (table 23.4) produce a USB dedicated clock at 48 MHz. Operation at other
frequencies cannot be guaranteed.
Table 23.4 Clock Selection when the USB is to be used
Page 1208 of 1392
Input clock frequency
from the oscillator (MHz)
8 MHz
12 MHz
16 MHz
PLL Circuit for the USB Module
USB dedicated clock
(cku: 48 MHz)
EXTAL × 6
EXTAL × 4
EXTAL × 3
System clock (φ)
EXTAL × 2 (16MHz)
EXTAL × 2 (24MHz)
EXTAL × 2 (32MHz)
EXTAL × 1 (16MHz)
H8S/2456, H8S/2456R, H8S/2454 Group
REJ09B0467-0350 Rev. 3.50
Jul 07, 2010