R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1214

• 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 23 Flash Memory
(l)
The boot program will set a new bit rate and return the new bit rate in response to the new bit-rate
selection.
This selection should be sent after sending the clock mode selection command.
• Command, H'3F, (1 byte): Selection of new bit rate
• Size (1 byte): The number of bytes that represents the bit rate, input frequency, number of
• Bit rate (2 bytes): New bit rate
• Input frequency (2 bytes): Frequency of the clock input to the boot program
• Number of multiplication ratios (1 byte): The number of multiplication ratios to which the
• Multiplication ratio 1 (1 byte): The value of multiplication or division ratios for the main
• Multiplication ratio 2 (1 byte): The value of multiplication or division ratios for the peripheral
• SUM (1 byte): Checksum
• Response, H'06, (1 byte): Response to selection of a new bit rate
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Command
Response
multiplication ratios, and multiplication ratio
One hundredth of the value (e.g. when the value is 19,200 bps, the bit rate is H'00C0, which is
192.)
This is valid to the hundredths place and represents the value in MHz multiplied by 100 (e.g.
when the value is 64 MHz, the input frequency is H'1900 (= 6400)).
device can be set.
operating frequency
Multiplication ratio (1 byte): The value of the multiplication ratio (e.g. when the clock
frequency is multiplied by four, the multiplication ratio will be H'04.)
Division ratio: The inverse of the division ratio, as a negative number (e.g. when the clock
frequency is divided by two, the value of division ratio will be H'FE. H'FE = [-2])
frequency
Multiplication ratio (1 byte): The value of the multiplication ratio (e.g. when the clock
frequency is multiplied by four, the multiplication ratio will be H'04.)
(Division ratio: The inverse of the division ratio, as a negative number (e.g. when the clock is
divided by two, the value of division ratio will be H'FE. H'FE = [-2])
When it is possible to set the bit rate, the response will be ACK.
New Bit-Rate Selection
H'3F
Number of
multiplication ratios
SUM
H'06
Size
Multiplication
ratio 1
Bit rate
Multiplication
ratio 2
H8S/2427, H8S/2427R, H8S/2425 Group
Input frequency
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010