87C752 Philips Semiconductors, 87C752 Datasheet - Page 15

• Manufacturer Part Number: 87C752
• Description: 80C51 8-bit microcontroller family 2K/64 OTP/ROM/ 5 channel 8 bit A/D/ I2C/ PWM/ low pin count
• Manufacturer: Philips Semiconductors

Philips Semiconductors
AC ELECTRICAL CHARACTERISTICS
T
EXPLANATION OF THE AC SYMBOLS
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
1999 Jul 23
amb
1/t
External Clock (Figure 4)
t
t
t
t
CHCX
CLCX
CLCH
CHCL
80C51 8-bit microcontroller family
2K/64 OTP/ROM, 5 channel 8 bit A/D, I
CLCL
SYMBOL
= 0 C to +70 C or –40 C to +85 C, V
Oscillator frequency:
High time
Low time
Rise time
Fall time
V
CC
V
0.45V
CC
–0.5
0.45V
–0.5
CC
0.2 V
= 5 V 10%, V
0.2 V
PARAMETER
CC
CC
– 0.1
+ 0.9
Figure 5. AC Testing Input/Output
Figure 4. External Clock Drive
0.2 V
0.2 V
SS
CC
CC
2
+ 0.9
– 0.1
= 0 V
C, PWM, low pin count
t
4, 8
CHCL
15
t
CLCX
t
CLCL
t
CLCH
t
CHCX
MIN
3.5
20
20
VARIABLE CLOCK
SU00297
SU00307
83C752/87C752
MAX
16
20
20
Product specification
UNIT
MHz
ns
ns
ns
ns