R8C datasheet(79/106 Pages) RENESAS

79 / 106 page

R01DS0011EJ0100 Rev.1.00

Page 79 of 102

Dec 21, 2010

R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group

5. Electrical Characteristics

5.2.3

Peripheral Function Characteristics

Notes:

The A/D conversion result will be undefined in wait mode, stop mode, power-off mode, when the flash memory stops, and in

low-current-consumption mode. Do not perform A/D conversion in these states or transition to these states during A/D

conversion.

This applies when the peripheral functions are stopped.

When the analog input voltage is over the reference voltage, the A/D conversion result will be 3FFh in 10-bit mode and FFh in

8-bit mode.

Table 5.32

A/D Converter Characteristics

(VCC/AVCC = Vref = 1.8 to 5.5 V, VSS = 0 V, and Topr =

−20 to 85°C (N version)/ −40 to

°C (D version), unless otherwise specified.)

Symbol

Parameter

Conditions

Standard

Unit

Min.

Typ.

Max.

–

Resolution

Vref = AVCC

––

Bit

–

Absolute accuracy (2)

10-bit mode

Vref = AVCC = 5.0 V

AN0 to AN11 input

–

±3

LSB

Vref = AVCC = 2.2 V

AN0 to AN11 input

–

±5

LSB

Vref = AVCC = 1.8 V

AN0 to AN11 input

–

±5

LSB

8-bit mode

Vref = AVCC = 5.0 V

AN0 to AN11 input

–

±2

LSB

Vref = AVCC = 2.2 V

AN0 to AN11 input

–

±2

LSB

Vref = AVCC = 1.8 V

AN0 to AN11 input

–

±2

LSB

φAD

A/D conversion clock

4.0

≤ Vref = AVCC ≤ 5.5 V (1)

1–

MHz

3.2

≤ Vref = AVCC ≤ 5.5 V (1)

1–

MHz

2.7

≤ Vref = AVCC ≤ 5.5 V (1)

1–

MHz

1.8

≤ Vref = AVCC ≤ 5.5 V (1)

1–

MHz

–

Tolerance level impedance

–

Ω

tCONV

Conversion time

10-bit mode

Vref = AVCC = 5.0 V,

φAD = 20 MHz

2.2

–

µs

8-bit mode

Vref = AVCC = 5.0 V,

φAD = 20 MHz

2.2

–

tSAMP

Sampling time

φAD = 20 MHz

0.8

–

µs

IVref

Vref current

Vcc = 5 V, XIN = f1 =

φAD = 20 MHz

–

µA

Vref

Reference voltage

1.8

–

AVCC

VIA

Analog input voltage (3)

0–

Vref

OCVREF On-chip reference voltage

2 MHz

≤ φAD ≤ 4 MHz

1.53

1.70

1.87

Table 5.33

Temperature Sensor Characteristics

(VSS = 0 V and Topr =

−20 to 85 °C (N version)/−40 to 85 °C (D version), unless

otherwise specified.)

Symbol

Parameter

Conditions

Standard

Unit

Min.

Typ.

Max.

VTMP

Temperature sensor output voltage 1.8 V

≤ Vref = AVCC ≤ 5.5 V

φAD = 1.0 MHz to 5.0 MHz

Ambient temperature = 25

°C

550

600

650

–

Temperature coefficient

1.8 V

≤ Vref = AVCC ≤ 5.5 V

φAD = 1.0 MHz to 5.0 MHz

Ambient temperature = 25

°C

–

−2.1

–

mV/

°C

–

Start-up time

1.8 V

≤ Vref = AVCC ≤ 5.5 V

φAD = 1.0 MHz to 5.0 MHz

–

200

µs

ITMP

Operating current

1.8 V

≤ Vref = AVCC ≤ 5.5 V

φAD = 1.0 MHz to 5.0 MHz

–

100

–

µA

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