R4F24268NVFQV Renesas Electronics America, R4F24268NVFQV Datasheet - Page 1055

• Manufacturer Part Number: R4F24268NVFQV
• Description: MCU 256K FLASH 48K 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of R4F24268NVFQV

• 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: -

H8S/2426, H8S/2426R, H8S/2424 Group
17.7.9
When operating two A/D converters concurrently, if conversion by the two converters starts at
different times, the accuracy of conversion may be affected by crosstalk between the two
converters.
When converter Y starts A/D conversion during the period indicated by T
after the start of A/D conversion by converter X, and conversion by converter X is completed
while conversion by converter Y is still in progress, the accuracy of A/D conversion may not be
guaranteed.
When operating two A/D converters concurrently, be sure to conduct adequate evaluation in
advance.
Note: X and Y in "converter X" and "converter Y" indicate either pair of 0 and 1.
Table 17.10 Difference in Time When A/D Conversion Starts (T
REJ09B0466-0350 Rev. 3.50
Jul 09, 2010
Figure 17.13 An Example of Timing Where Accuracy of A/D Conversion is not Guaranteed
T
0 to 10
X-Y
Converter Y
ADST
Converter X
ADST
ANn
in operation
Concurrent Operation of Two A/D Converters
[Legend]
ANn: Operating channel of converter Y
T
t
SPL
X-Y
Wait for conversion
: Input sampling time
: Difference in time when A/D conversion starts
T
X-Y
t
SPL
Unit
ADCLK cycles
A/D conversion
X-Y
) in Figure 17.13
X-Y
in figure 17.13 below
Wait for conversion
Section 17 A/D Converter
Page 1025 of 1372