MB90P663APFM View Datasheet(PDF) - Fujitsu

Part Name

Description

Manufacturer

MB90P663APFM

16-bit Proprietary Microcontroller

Fujitsu 

MB90660A Series

5. Electrical Characteristics of A/D Converter

Parameter

(AVCC = VCC = +2.7 V to +5.5 V, AVSS = VSS = 0.0 V, 2.7 V ≤ AVR, TA = –40°C to +85°C)

Symbol Pin name

Min.

Value

Typ.

Unit

Max.

Resolution

—

—

—

10

10

bit

Total error

—

—

—

—

±3.0

LSB

Linearity error

—

—

—

—

±2.0

LSB

Differential linearity error

—

—

—

—

±1.5

LSB

Zero transition voltage

VOT

AN0 to AN7

–1.5

+0.5

+2.5

LSB

Full-scale transition voltage

VFST AN0 to AN7 AVR – 4.5 AVR – 1.5 AVR + 0.5 LSB

Conversion time

6.125*1

—

—

—

12.25*2

—

—

µs

—

µs

Analog port input voltage

IAIN

AN0 to AN7

—

0.1

10

µA

Analog input voltage

VAIN

AN0 to AN7

0

—

AVR

V

Reference voltage

— AVR

3.5

—

AVCC

V

Supply current

IA

AVCC

IAH

AVCC

—

3

—

mA

—

—

5*3

µA

Reference voltage supply current

IR

AVR

IRH

AVR

—

200

—

µA

—

—

5*3

µA

Variation between channels

— AN0 to AN7

—

—

4

LSB

*1: VCC = 5.0 V ±10% at 16 MHz machine clock

*2: VCC = 3.0 V ±10% at 8 MHz machine clock

*3: Current when CPU is stopped and A/D converter is not operating (when VCC = AVCC = AVR = 5.0 V)

Notes: • The relative error becomes larger as the reference voltage (AVR) becomes smaller.

• Be sure to use the A/D converter only when output impedance of the external analog input circuit meets

the following conditions.

External circuit output impedance < approx. 7 kΩ

• If the output impedance of the external circuit is too high, there may not be enough time to sample the

analog voltage. (Sampling time = 3.75 µs @4 MHz (equivalent to internal 16 MHz when multiplying by 4))

• For an external capacitor to be provided outside the chip, its capacity should desirably be thousands times

larger than of the capacity in the chip taking in consideration the influence of the capacity destribution of

the external and internal capacitors.

• Figure Model of Analog Input Circuit

Analog input

RON1

RON2

RON3

RON1 = Approx. 1.5 kΩ (VCC = 5.0 V)

RON2 = Approx. 0.5 kΩ (VCC = 5.0 V)

RON3 = Approx. 0.5 kΩ (VCC = 5.0 V)

RON4 = Approx. 0.5 kΩ (VCC = 5.0 V)

C0 = Approx. 60 pF

C1 = Approx. 4 pF

Note: Use the values shown here as guidelines.

Sample and hold circuit

C0

RON4

C1

Comparator

59

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