Motorola MCF5281 用户手册

33-8

MOTOROLA

 

Input Voltage

V

INDC

V

SSA

–0.3

V

DDA

 + 0.3 

V

Input High Voltage, PQA and PQB

V

IH

0.7 (V

DDA

)

V

DDA

 

+ 0.3

V

Input Low Voltage, PQA and PQB

V

IL

V

SSA

 

– 0.3

0.4(V

DDA

)

V

Input Hysteresis, PQA, PQB

 3

V

HYS

0.5

—

V

Output High Voltage, PQA/PQB 

3

I

OH

 = TBD

V

OH

VDDH-0.8

—
—

V

Analog Supply Current

Normal Operation

 4

Low-Power Stop

I

DDA

—
—

5.0

10.0

mA

µA

Reference Supply Current, DC
Reference Supply Current, Transient

I

REF

I

REF

—
—

250

2.0

µA

mA

Load Capacitance, PQA/PQB

C

L

—

50

pF

Input Current, Channel Off

 5

I

OFF

-200

200

nA

Total Input Capacitance

 6

PQA Not Sampling
PQB Not Sampling

Incremental Capacitance added during sampling

C

IN

—
—

—

15
10

5

pF

1

QADC converter specifications are only guaranteed for VDDH and VDDA = 5.0V +/- 0.5V. VDDH and VDDA may be 
powered down to 2.7V with only GPIO functions supported.

2

To obtain full-scale, full-range results, V

SSA

 

≤ V

RL

 

≤ V

INDC

 

≤ V

RH

 

≤ V

DDA

3

Parameter applies to the following pins:
Port A: PQA[4:3]/AN[56:55]/ETRIG[2:1], PQA[1:0]/AN[53:52]/MA[1:0]
Port B: PQB[3:0]/AN[3:0]/AN[Z:W]

4

Current measured at maximum system clock frequency with QADC active.

5

Maximum leakage occurs at maximum operating temperature. Current decreases by approximately one-half for each 8 
to 12° C, in the ambient temperature range of 50 to 125 °C.

6

This parameter is characterized before qualification rather than 100% tested.

(V

DDH 

and V

DDA 

= 5.0 V

dc

 

±

 0.5V, V

DD 

= 2.7-3.6V, V

SS

 and V

SSA

 = 0 V

dc

, FQCLK = 2.0 MHz, TA within operating temperature range)