R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1095

• 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

H8S/2427, H8S/2427R, H8S/2425 Group
18.7.9
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 18.10 Difference in Time When A/D Conversion Starts (T
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010
T
0 to 10
X-Y
Figure 18.13 Example of Timing Where Accuracy of A/D Conversion is not Guaranteed
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 18.13
X-Y
in figure 18.13 below
Wait for conversion
Section 18 A/D Converter
Page 1065 of 1448