R8C2K datasheet(421/471 Pages) RENESAS

421 / 471 page

R8C/2K Group, R8C/2L Group

22. Electrical Characteristics

Rev.1.10

Dec 21, 2007

Page 404 of 450

REJ09B0406-0110

NOTES:

AVCC = 2.7 to 5.5 V at Topr =

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

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.

Figure 22.1

Ports P0 to P4 Timing Measurement Circuit

Table 22.3

A/D Converter Characteristics

Symbol

Parameter

Conditions

Standard

Unit

Min.

Typ.

Max.

−

Resolution

Vref = AVCC

−−

Bits

−

Absolute

accuracy

10-bit mode

φAD = 10 MHz, Vref = AVCC = 5.0 V

−−

±3

LSB

8-bit mode

φAD = 10 MHz, Vref = AVCC = 5.0 V

−−

±2

LSB

10-bit mode

φAD = 10 MHz, Vref = AVCC = 3.3 V

−−

±5

LSB

8-bit mode

φAD = 10 MHz, Vref = AVCC = 3.3 V

−−

±2

LSB

Rladder

Resistor ladder

Vref = AVCC

−

Ω

tconv

Conversion time 10-bit mode

φAD = 10 MHz, Vref = AVCC = 5.0 V

3.3

−−

µs

8-bit mode

φAD = 10 MHz, Vref = AVCC = 5.0 V

2.8

−−

µs

Vref

Reference voltage

2.2

−

AVCC

VIA

Analog input voltage(2)

−

AVCC

−

A/D operating

clock frequency

Without sample and hold

Vref = AVCC = 2.7 to 5.5 V

0.25

−

MHz

With sample and hold

Vref = AVCC = 2.7 to 5.5 V

−

MHz

30pF

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