M16CSLASH56D datasheet(62/85 Pages) RENESAS

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REJ03B0307-0110 Rev.1.10 Dec 01, 2009

Page 62 of 83

M16C/5LD Group, M16C/56D Group

5. Electrical Characteristics

5.1.3

A/D Conversion Characteristics

Notes:

Use when AVCC = VCC

Flash memory rewrite disabled. Except for the analog input pin, set the pins to be measured as input

ports and connect them to VSS. See Figure 5.3 “A/D Accuracy Measure Circuit”.

This applies when using A/D1 circuits, with the ADSTBY bit for the unused A/D converter set to 0

(A/D operation stopped (standby)).

When analog input voltage is over reference voltage, the result of A/D conversion is 3FFh.

Figure 5.3

A/D Accuracy Measure Circuit

Table 5.4

A/D Conversion Characteristics (1, 3)

VCC = AVCC = VREF = 3.0 to 5.5 V, VSS = AVSS = 0 V at Topr = -40 to 85°C unless otherwise specified

Symbol

Parameter

Measuring Condition

Standard

Unit

Min.

Typ.

Max.

—–

Resolution

VREF = VCC

Bits

INL

Integral Non-Linearity Error

VREF = VCC = 5.0 V (2)

±3

LSB

VREF = VCC = 3.3 V (2)

±5

LSB

—–

Absolute Accuracy

VREF = VCC = 5.0 V (2)

±3

LSB

VREF = VCC = 3.3 V (2)

±5

LSB

φAD

A/D operating clock frequency

4.0 V

≤ V

CC ≤ 5.5 V

MHz

3.2 V

≤ V

CC ≤ 4.0 V

MHz

3.0 V

≤ V

CC ≤ 3.2 V

MHz

—–

Tolerance Level Impedance

DNL

Differential Non-Linearity Error

(2)

±1

LSB

—–

Offset Error

(2)

±3

LSB

—–

Gain Error

(2)

±3

LSB

tCONV

10-bit Conversion Time

VREF = VCC = 5V,

φAD = 25 MHz

1.60

μs

tsamp

Sampling time

0.6

μs

VREF

Reference Voltage

3.0

VCC

VIA

Analog Input Voltage (4)

0VREF

Analog input

AN: One of the analog input pin

P0 to P10: I/O pins other than AN

P0 to P10

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