MC9S08SH8CSC View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MC9S08SH8CSC

HCS08 Microcontrollers

Freescale Semiconductor 

Appendix A Electrical Characteristics

A.11 ADC Characteristics

Table A-11. ADC Operating Conditions

Characteristic

Conditions

Symb

Min

Typ1

Max Unit

Comment

Supply voltage

Input Voltage

Input

Capacitance

Absolute

VDDAD

2.7

—

5.5

V

VADIN

VREFL

—

VREFH

V

CADIN

—

4.5

5.5

pF

Input

Resistance

RADIN

—

3

5

kΩ

Analog Source

Resistance

10 bit mode

fADCK > 4MHz

fADCK < 4MHz

RAS

—

—

5

—

—

10

kΩ

External to MCU

8 bit mode (all valid fADCK)

—

—

10

ADC

Conversion

Clock Freq.

High Speed (ADLPC=0)

Low Power (ADLPC=1)

fADCK

0.4

—

8.0

MHz

0.4

—

4.0

1 Typical values assume VDDAD = VDD = 5.0V, Temp = 25°C, fADCK=1.0MHz unless otherwise stated. Typical values are for

reference only and are not tested in production.

RAS

VAS

+

–

ZAS

CAS

SIMPLIFIED

INPUT PIN EQUIVALENT

CIRCUIT

+

VADIN

–

Pad

leakage

due to

input

protection

ZADIN

SIMPLIFIED

CHANNEL SELECT

CIRCUIT

RADIN

ADC SAR

ENGINE

INPUT PIN

INPUT PIN

INPUT PIN

RADIN

RADIN

RADIN

CADIN

Figure A-9. ADC Input Impedance Equivalency Diagram

MC9S08SH8 MCU Series Data Sheet, Rev. 3

306

Freescale Semiconductor

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