HD6432142 datasheet(903/1177 Pages) RENESAS

903 / 1177 page

Section 26 Electrical Characteristics

Rev. 4.00 Sep 27, 2006 page 859 of 1130

REJ09B0327-0400

26.4.4

A/D Conversion Characteristics

Tables 26.40 and 26.41 list the A/D conversion characteristics.

Table 26.40 A/D Conversion Characteristics

(AN7 to AN0 Input: 134/266-State Conversion)

Condition A: V

CC = 5.0 V ±10%, AVCC = 5.0 V ±10%, AVref = 4.5 V to AVCC,

SS = AVSS = 0 V, φ = 2 MHz to maximum operating frequency,

a = –20 to +75°C

Condition B: V

CC = 3.0 V to 5.5 V, AVCC = 3.0 V to 5.5 V, AVref = 3.0 V to AVCC,

SS = AVSS = 0 V, φ = 2 MHz to maximum operating frequency,

a = –20 to +75°C

Condition A

Condition B

20 MHz

10 MHz

Item

Min

Typ

Max

Min

Typ

Max

Unit

Resolution

Bits

Conversion time*

—

6.7

—

13.4

µs

Analog input

capacitance

—

——20

——

10*

——10*

Ω

Permissible signal-

source impedance

Nonlinearity error

—

±3.0

—

±7.0

LSB

Offset error

—

±3.5

—

±7.5

LSB

Full-scale error

—

±3.5

—

±7.5

LSB

Quantization error

—

±0.5

—

±0.5

LSB

Absolute accuracy

—

±4.0

—

±8.0

LSB

Notes: 1. When 4.0 V

≤ AV

CC ≤ 5.5 V

2. When 3.0 V

≤ AV

CC < 4.0 V

3. When conversion time

≥ 11. 17 µs (CKS = 1 and φ ≤ 12 MHz, or CKS = 0)

4. When conversion time < 11. 17 µs (CKS = 1 and

φ > 12 MHz)

5. In single mode and

φ = maximum operating frequency.

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