UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 540

• Manufacturer Part Number: UPD70F3738GF-GAS-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3738GF-GAS-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

14.7 How to Read A/D Converter Characteristics Table
538
This section describes the terms related to the A/D converter.
(1) Resolution
(2) Overall error
The minimum analog input voltage that can be recognized, that is, the ratio of an analog input voltage to 1 bit
of digital output is called 1 LSB (least significant bit). The ratio of 1 LSB to the full scale is expressed as %FSR
(full-scale range). %FSR is the ratio of a range of convertible analog input voltages expressed as a percentage,
and can be expressed as follows, independently of the resolution.
When the resolution is 10 bits, 1 LSB is as follows:
The accuracy is determined by the overall error, independently of the resolution.
This is the maximum value of the difference between an actually measured value and a theoretical value.
It is a total of zero-scale error, full-scale error, linearity error, and a combination of these errors.
The overall error in the characteristics table does not include the quantization error.
1%FSR = (Maximum value of convertible analog input voltage – Minimum value of convertible analog
input voltage)/100
1 LSB = 1/2
= 0.098%FSR
= (AV
= AV
10
REF0
= 1/1,024
REF0
/100
− 0)/100
1 ...... 1
0 ...... 0
0
CHAPTER 14 A/D CONVERTER
Figure 14-16. Overall Error
Ideal line
User’s Manual U18953EJ5V0UD
Analog input
Overall error
AV
REF0