Philips Semiconductors

Product specification

83C750/87C750

80C51 8-bit microcontroller family

1K/64 OTP/ROM, low pin count

1998 May 01

8

EXPLANATION OF THE AC SYMBOLS

In defining the clock waveform, care must be taken not to exceed

the MIN or MAX limits of the AC electrical characteristics table.

Each timing symbol has five characters. The first character is always

‘t’ (= time). The other characters, depending on their positions,

indicate the name of a signal or the logical status of that signal. The

designations are:

C – Clock

D – Input data

H – Logic level high

L – Logic level low

Q – Output data

T – Time

V – Valid

X – No longer a valid logic level

Z – Float

0.45V

SU00297

Figure 2.

External Clock Drive

4

8

12

16

MAX ACTIVE ICC

5

TYP ACTIVE ICC

5

MAX IDLE ICC

6

TYP IDLE ICC

6

2

4

6

8

10

12

14

16

18

20

22

Frequency (MHz)

Frequency (MHz)

MAX ACTIVE ICC

5

TYP ACTIVE ICC

5

MAX IDLE ICC

6

TYP IDLE ICC

6

60

50

40

30

20

10

0

16

20

24

28

32

36

40

SU00313

Figure 3.

Notes 5 and 6 refer to DC Electrical Characteristics.

ROM CODE SUBMISSION

When submitting ROM code for the 80C750, the following must be specified:

1. 1k byte user ROM data

ADDRESS

CONTENT

BIT(S)

COMMENT

0000H to 03FFH

DATA

7:0

User ROM Data