P80C552IFA datasheet(18/24 Pages) PHILIPS

18 / 24 page

Philips Semiconductors

Product specification

80C552/83C552

Single-chip 8-bit microcontroller

1998 Aug 13

VDD–0.5

0.45V

0.2VDD+0.9

0.2VDD–0.1

NOTE:

AC INPUTS DURING TESTING ARE DRIVEN AT VDD–0.5 FOR A LOGIC ‘1’ AND

0.45V FOR A LOGIC ‘0’. TIMING MEASUREMENTS ARE MADE AT VIH MIN FOR A

LOGIC ‘1’ AND VIL MAX FOR A LOGIC ‘0’.

Figure 7. AC Testing Input/Output

VLOAD

VLOAD+0.1V

VLOAD–0.1V

VOH–0.1V

VOL+0.1V

NOTE:

FOR TIMING PURPOSES, A PORT IS NO LONGER FLOATING WHEN A 100MV

CHANGE FROM LOAD VOLTAGE OCCURS, AND BEGINS TO FLOAT WHEN A

100mV CHANGE FROM THE LOADED VOH/VOL LEVEL OCCURS. IOH/IOL > +

20mA.

Figure 8. Float Waveform

TIMING

REFERENCE

POINTS

Figure 9. Timing SIO1 (I2C) Interface

tRD

tSU;STA

tBUF

tSU;STO

0.7 VCC

0.3 VCC

0.7 VCC

0.3 VCC

tFD

tRC

tFC

tHIGH

tLOW

tHD;STA

tSU;DAT1

tHD;DAT

tSU;DAT2

tSU;DAT3

START condition

repeated START condition

SDA

(INPUT/OUTPUT)

SCL

(INPUT/OUTPUT)

STOP condition

START or repeated START condition

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