UPD70F3451GC-UBT-A Renesas Electronics America, UPD70F3451GC-UBT-A Datasheet - Page 686

• Manufacturer Part Number: UPD70F3451GC-UBT-A
• Description: MCU 32BIT 128KB FLASH 80LQFP
• Manufacturer: Renesas Electronics America
• Series: V850E/Ix3r

Specifications of UPD70F3451GC-UBT-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: CSI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 44
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 5.5 V
• Data Converters: A/D 10x12b, 4x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

684
(3) Quantization error
(4) Zero-scale error
When analog values are converted to digital values, a ±1/2 LSB error naturally occurs. In an A/D converter, an
analog input voltage in a range of ±1/2 LSB is converted to the same digital code, so a quantization error
cannot be avoided.
Note that the quantization error is not included in the overall error, zero-scale error, full-scale error, integral
linearity error, and differential linearity error in the characteristics table.
This shows the difference between the actual measurement value of the analog input voltage and the
theoretical value (1/2 LSB) when the digital output changes from 0……000 to 0……001.
1 ...... 1
0 ...... 0
111
100
011
010
001
000
CHAPTER 12 A/D CONVERTERS 0 AND 1
0
−1
1/2 LSB
Figure 12-24. Quantization Error
Figure 12-25. Zero-Scale Error
Zero-scale error
User’s Manual U18279EJ3V0UD
0
1
Analog input (LSB)
Analog input
1/2 LSB
Ideal line
2
Quantization error
3
AV
AV
REFPn
REFPn