Philips Semiconductors

Preliminary specification

83C453/87C453

80C51 8-bit microcontroller family

8K/256 OTP/ROM, expanded I/O

1998 Apr 23

16

AC ELECTRICAL CHARACTERISTICS (Continued)

16MHz CLOCK

VARIABLE CLOCK

SYMBOL

FIGURE

PARAMETER

MIN

MAX

MIN

MAX

UNIT

Port 6 output

13

ODS width

209

ns

14

SEL to data out delay

85

85

ns

13

ODS to data out delay

80

80

ns

13

ODS to data float delay

35

35

ns

13

ODS to AFLAG (OBF) delay

100

100

ns

13

PE to data out delay

120

120

ns

14

ODS to AFLAG (SEL) delay

100

100

ns

External Clock

17

High time

20

20

ns

17

Low time

20

20

ns

17

Rise time

20

20

ns

17

Fall time

20

20

ns

NOTES:

1. Parameters are valid over operating temperature range unless otherwise specified.

2. Load capacitance for port 0, ALE, and PSEN = 100pF, load capacitance for all other outputs = 80pF.