Philips Semiconductors

Product specification

OM5232

CMOS single-chip 8-bit microcontroller

December 1994

11

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

20mA.

Figure 8. Float Waveform

TIMING

REFERENCE

POINTS

VDD

P0

EA

RST

XTAL1

XTAL2

VSS

VDD

VDD

VDD

IDD

(NC)

CLOCK SIGNAL

All other pins are disconnected

VDD

P0

RST

XTAL1

XTAL2

VSS

VDD

VDD

IDD

(NC)

CLOCK SIGNAL

P1.6

P1.7

P1.6

P1.7

EA

*

*

*

*

All other pins are disconnected

VDD

P0

RST

XTAL1

XTAL2

VSS

VDD

VDD

IDD

(NC)

P1.6

P1.7

EA

*

*

NOTE:

*