R4F24268NVRFQV Renesas Electronics America, R4F24268NVRFQV Datasheet - Page 1053
R4F24268NVRFQV
Manufacturer Part Number
R4F24268NVRFQV
Description
MCU 256KB FLASH 48K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24268NVZFQV.pdf
(1406 pages)
Specifications of R4F24268NVRFQV
Core Processor
H8S/2600
Core Size
16/32-Bit
Speed
33MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SSU, UART/USART
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 10x10b, 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
-
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H8S/2426, H8S/2426R, H8S/2424 Group
17.7.7
In board design, digital circuitry and analog circuitry should be as mutually isolated as possible,
and layout in which digital circuit signal lines and analog circuit signal lines cross or are in close
proximity should be avoided as far as possible. Failure to do so may result in incorrect operation
of the analog circuitry due to inductance, adversely affecting A/D conversion values.
Digital circuitry must be isolated from the analog input pins (AN0 to AN15*), analog reference
power supply (Vref), and analog power supply (AVcc) by the analog ground (AVss). Also, the
analog ground (AVss) should be connected at one point to a stable ground (Vss) on the board.
Note: * In the H8S/2424 group, only AN0 to AN7, AN11, and AN12 are available as analog
17.7.8
A protection circuit connected to prevent damage due to an abnormal voltage such as an excessive
surge at the analog input pins (AN0 to AN15*) should be connected between AVcc and AVss as
shown in figure 17.12. Also, the bypass capacitors connected to AVcc and the filter capacitor
connected to the AN0 to AN11 pins must be connected to AVss.
If a filter capacitor is connected, the input currents at the AN0 to AN15* pins are averaged, and so
an error may arise. Also, when A/D conversion is performed frequently, as in scan mode, if the
current charged and discharged by the capacitance of the sample-and-hold circuit in the A/D
converter exceeds the current input via the input impedance (R
input pin voltage. Careful consideration is therefore required when deciding the circuit constants.
Note: * In the H8S/2424 group, only AN0 to AN7, AN11, and AN12 are available as analog
REJ09B0466-0350 Rev. 3.50
Jul 09, 2010
Notes on Board Design
Notes on Noise Countermeasures
input pins.
input pins.
in
), an error will arise in the analog
Section 17 A/D Converter
Page 1023 of 1372
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