Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 用户手册

产品代码

DEMO9S12XHY256

Electrical Characteristics

MC9S12XHY-Family Reference Manual, Rev. 1.04

Freescale Semiconductor

733

A.2.3

ATD Accuracy

Table A-14

and

Table A-15

specifies the ATD conversion performance excluding any errors due to

current injection, input capacitance and source resistance.

Table A-13. ATD Electrical Characteristics

Conditions are shown in

Table A-4

unless otherwise noted

Num

Rating

Symbol

Min

Typ

Max

Unit

C Max input source resistance

Refer to

A.2.2.2

for further information concerning source resistance

—

D Total input capacitance Non sampling

Total input capacitance Sampling

INN

INS

—
—

10
16

D Input internal Resistance

INA

—

C Disruptive analog input current

–2.5

—

2.5

C Coupling ratio positive current injection

—

1E-4

A/A

C Coupling ratio negative current injection

—

3E-3

A/A