R8C/35D Group

5. Electrical Characteristics

REJ03B0286-0100 Rev.1.00

Page 26 of 43

Mar 26, 2010

Notes:

1.

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

specified.

2.

The A/D conversion result will be undefined in wait mode, stop 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.

3.

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.

Notes:

1.

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

2.

When the digital filter is disabled.

Table 5.3

A/D Converter Characteristics

Symbol

Parameter

Conditions

Standard

Unit

Min.

Typ.

Max.

–

Resolution

––

10

Bit

–

Absolute accuracy

10-bit mode

AN0 to AN7 input,

AN8 to AN11 input

––

±3

LSB

AN0 to AN7 input,

AN8 to AN11 input

––

±5

LSB

AN0 to AN7 input,

AN8 to AN11 input

––

±5

LSB

AN0 to AN7 input,

AN8 to AN11 input

––

±5

LSB

8-bit mode

AN0 to AN7 input,

AN8 to AN11 input

––

±2

LSB

AN0 to AN7 input,

AN8 to AN11 input

––

±2

LSB

AN0 to AN7 input,

AN8 to AN11 input

––

±2

LSB

AN0 to AN7 input,

AN8 to AN11 input

––

±2

LSB

φAD

A/D conversion clock

4.0 V

2–

20

MHz

3.2 V

2–

16

MHz

2.7 V

2–

10

MHz

2.2 V

2–

5

MHz

–

Tolerance level impedance

–

3

–

k

Ω

Conversion time

10-bit mode

φAD = 20 MHz

2.15

–

–

µs

8-bit mode

φAD = 20 MHz

2.15

–

–

µs

Sampling time

φAD = 20 MHz

0.75

–

–

µs

φAD = 20 MHz

–

45

–

µA

Reference voltage

2.2

–

V

Analog input voltage (3)

0–

V

OCVREF On-chip reference voltage

2 MHz

≤ φAD ≤ 4 MHz

1.19

1.34

1.49

V

Table 5.4

Comparator B Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

Vref

IVREF1, IVREF3 input reference voltage

0

–

− 1.4

V

IVCMP1, IVCMP3 input voltage

−0.3

–

V

–

Offset

–

5

100

mV

Comparator output delay time (2)

–

0.1

–

µs

Comparator operating current

–

17.5

–

µA