R5F21113FP datasheet(15/29 Pages) RENESAS

15 / 29 page

Rev.1.00

Sep 17, 2004

page 15 of 26

REJ09B0062-0100Z

R8C/11 Group

5. Electrical Characteristics

Table 5.3 A/D Conversion Characteristics

Standard

Min.

Typ. Max.

–

Resolution

Bit

Vref =VCC

Symbol

Parameter

Measuring condition

Unit

LSB

±3

RLADDER

tCONV

Ladder resistance

Conversion time

Reference voltage

Analog input voltage

VIA

VREF

Vref

Note

1: Referenced to VCC=AVCC=2.7 to 5.5V at Topr = -20 to 85 °C / -40 to 85 °C unless otherwise specified.

2: When fAD is 10 MHz more, divide the fAD and make A/D operation clock frequency (ØAD) lower than

10 MHz.

3: When the Vcc is less than 4.2V, divide the fAD and make A/D operation clock frequency (ØAD) lower than fAD/2.

4: Hold Vcc=Vref.

f(XIN)=øAD=10 MHz, Vref=Vcc=5.0V

VREF=VCC

–

Absolute

accuracy

–

10 bit mode

8 bit mode

f(XIN)=øAD=10 MHz, Vref=Vcc=5.0V

±2

LSB

10 bit mode

8 bit mode

f(XIN)=øAD=10 MHz, Vref=Vcc=3.3V

±5

LSB

f(XIN)=øAD=10 MHz, Vref=Vcc=3.3V

±2

LSB

Ω

10 bit mode

8 bit mode

f(XIN)=øAD=10 MHz, Vref=Vcc=5.0V

3.3

2.8

µs

A/D operation

clock frequency2

Without sample & hold

With sample & hold

0.25

MHz

1.0

MHz

VCC4

30pF

Figure 5.1 Port P0 to P4 measurement circuit

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