Philips Semiconductors

Product specification

83C752/87C752

80C51 8-bit microcontroller family

1998 May 01

14

DC ELECTRICAL CHARACTERISTICS (Continued)

TEST

SYMBOL

PARAMETER

CONDITIONS

MIN

MAX

UNIT

Analog Inputs (A/D guaranteed only with quartz window covered.)

4.5

5.5

V

Analog operating supply current

mA

V

Analog input capacitance

15

pF

Sampling time

s

Conversion time

s

R

Resolution

8

bits

Relative accuracy

±1

LSB

Zero scale offset

±1

LSB

Full scale gain error

0.4

%

Channel to channel matching

±1

LSB

Crosstalk

0–100kHz

–60

dB

NOTES:

1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and

functional operation of the device at these or any conditions other than those described in the AC and DC Electrical Characteristics section

of this specification is not implied.

10mA

(NOTE: This is 85

°C spec.)

26mA

67mA

test conditions.

3. This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static

charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maxima.

noted.

8. Load capacitance for ports = 80pF.

less than 0.5V. Digital inputs on P1.0–P1.4 will not function normally.

11. These parameters do not apply to P1.0–P1.4 if the A/D function is enabled.

12. The input voltage slew rate should be <10V/ms. The maximum slew rate depends on the clock frequency of the microcontroller. Designers

should use low pass filters before the A/D inputs as a precaution to noise edges causing false readings.