RX72N datasheet(158/179 Pages) RENESAS

158 / 179 page

R01DS0343EJ0120 Rev.1.20

Page 158 of 179

Nov 15, 2023

RX72N Group

2. Electrical Characteristics

2.6

A/D Conversion Characteristics

Note:

The above specification values apply when there is no access to the external bus during A/D conversion. If access proceeds

during A/D conversion, values may not fall within the above ranges.

Note 1. The conversion time includes the sampling time and the comparison time. As the test conditions, the number of sampling states

is indicated.

Note 2. The value in parentheses indicates the sampling time.

Table 2.53

12-Bit A/D (Unit 0) Conversion Characteristics

Conditions: VCC = AVCC0 = AVCC1 = VCC_USB = VBATT = 2.7 to 3.6 V, 2.7 V ≤ VREFH0 ≤ AVCC0,

VSS = AVSS0 = AVSS1 = VREFL0 = VSS_USB = 0 V,

PCLKB = PCLKC = 1 MHz to 60 MHz, Ta = Topr, Source impedance = 1.0 kΩ

Item

Min.

Typ.

Max.

Unit

Test Conditions

Resolution

—

Bit

Analog input capacitance

—

Channel-dedi-

cated sample-and-

hold circuits in use

(AN000 to AN002)

Conversion time*1

(Operation at PCLKC = 60 MHz)

1.06

(0.4 + 0.25)

——

µs

 Sampling of channel-

dedicated sample-and-

hold circuits in 24 states

 Sampling in 15 states

Offset error

—

±1.5

±3.5

LSB

AN000 to AN002 = 0.25 V

Full-scale error

—

±1.5

±3.5

LSB

AN000 to AN002 = VREFH0

– 0.25 V

Quantization error

—

±0.5

—

LSB

Absolute accuracy

—

±3.0

±5.5

LSB

DNL differential nonlinearity error

—

±1.0

±2.0

LSB

INL integral nonlinearity error

—

±1.5

±3.0

LSB

Holding characteristics of sample-and-

hold circuits

——

µs

Dynamic range

0.25

—

VREFH0

– 0.25

Channel-dedi-

cated sample-and-

hold circuits not in

use

(AN000 to AN007)

Conversion time*1

(Operation at PCLKC = 60 MHz)

0.48

(0.267)*2

—

µs

Sampling in 16 states

Offset error

—

±1.0

±2.5

LSB

Full-scale error

—

±1.0

±2.5

LSB

Quantization error

—

±0.5

—

LSB

Absolute accuracy

—

±2.5

±4.5

LSB

DNL differential nonlinearity error

—

±0.5

±1.5

LSB

INL integral nonlinearity error

—

±1.0

±2.5

LSB

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