R8C23 datasheet(31/54 Pages) RENESAS

31 / 54 page

R8C/22 Group, R8C/23 Group

5. Electrical Characteristics

Rev.2.00 Aug 20, 2008

Page 29 of 48

REJ03B0097-0200

NOTES:

VCC = AVCC = 2.7 to 5.5 V at Topr = -40 to 85

°C (D, J version) / -40 to 125°C (K version), unless otherwise specified.

When analog input voltage exceeds reference voltage, A/D conversion result is 3FFh in 10-bit mode, FFh in 8-bit mode.

Figure 5.1

Ports P0 to P4, P6 Timing Measurement Circuit

Table 5.3

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

2.7

−

AVCC

VIA

Analog input voltage(2)

−

AVCC

−

A/D operating

clock frequency

Without sample & hold

0.25

−

MHz

With sample & hold

−

MHz

30pF

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