87C748 Philips Semiconductors, 87C748 Datasheet - Page 5

• Manufacturer Part Number: 87C748
• Description: 80C51 8-bit microcontroller family 2K/64 OTP/ROM/ low pin count
• Manufacturer: Philips Semiconductors

1. Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to V
2. Under steady state (non-transient) conditions, I
3. Pins of ports 1 and 3 source a transition current when they are being externally driven from 1 to 0. The transition current reaches its
4. Power-down I
5. Active I
6. Idle I
Philips Semiconductors
DC ELECTRICAL CHARACTERISTICS
T
NOTES:
1999 Apr 15
amb
SYMBOL
SYMBOL
V
V
V
V
V
V
V
V
V
C
I
I
I
R
C
I
V
I
I
IL
TL
LI
PD
PP
CC
IL
IH
IH1
IL1
IH2
OL
OL1
OH
OL2
PP
80C51 8-bit microcontroller family
2K/64 OTP/ROM, low pin count
RST
IO
noted.
If I
test conditions.
maximum value when V
RST = port 0 = V
port 0 = V
= 0 C to +70 C, V
OL
CC
exceeds the test condition, V
CC
is measured with all output pins disconnected; X1 driven with t
CC
Maximum I
Maximum I
Maximum total I
is measured with all output pins disconnected; X1 driven with t
Input low voltage
Input high voltage, except X1, RST
Input high voltage, X1, RST
P0.2
Input low voltage
Input high voltage
Output low voltage, ports 1 and 3
Output low voltage, port 0.2
Output high voltage, ports 1 and 3
Port 0.0 and 0.1 – Drivers
Output low voltage
Driver, receiver combined:
Capacitance
Logical 0 input current, ports 1 and 3
Logical 1 to 0 transition current, ports 1 and 3
Input leakage current, port 0
Internal pull-down resistor
Pin capacitance
Power-down current
V
Program current (for 87C748 only)
Supply current (see Figure 2)
; RST = V
PP
CC
program voltage (for 87C748 only)
CC
is measured with all output pins disconnected; port 0 = V
. I
CC
OL
OL
CC
SS
= 5V 10%, V
IN
per port pin:
per 8-bit port:
will be slightly higher if a crystal oscillator is used.
.
OL
is approximately 2V.
for all outputs:
PARAMETER
PARAMETER
4
OL
SS
may exceed the related specification. Pins are not guaranteed to sink current greater than the listed
= 0V
1
OL
10mA
26mA
67mA
must be externally limited as follows:
3
5
CLCH
TEST CONDITIONS
TEST CONDITIONS
T
V
V
CLCH
amb
Test freq = 1MHz,
CC
(over V
IN
CC
0.45 < V
V
, t
I
I
I
I
I
= 2V (0 to 70 C)
T
V
; X2, X1 n.c.; RST = V
CC
OL
OL
V
OH
OH
OH
= 2 to V
CHCL
I
amb
= 21 C to 27 C
PP
OL
V
, t
IN
SS
= 1.6mA
= 3.2mA
= 5V 10%
CHCL
= –60 A
= –25 A
= –10 A
= 0.45V
= 13.0V
= 3mA
CC
= 25 C
IN
= 0V
= 5ns, V
range)
< V
CC
= 5ns, V
2
2
CC
max
IL
= V
IL
= V
SS
SS
0.2V
SS
+ 0.5V, V
0.75V
0.7V
0.7V
0.9V
.
MIN
–0.5
–0.5
12.5
+ 0.5V, V
2.4
CC
25
CC
CC
CC
+0.9
CC
LIMITS
83C748/87C748
IH
IH
= V
0.2V
= V
V
V
V
CC
0.3V
SS
CC
CC
CC
Preliminary specification
MAX
–650
0.45
0.45
13.0
–50
175
0.4
CC
DD
10
10
50
50
– 0.5V; X2 n.c.;
10
+0.5
+0.5
+0.5
unless otherwise
CC
–0.1
– 0.5V; X2 n.c.;
UNIT
UNIT
mA
pF
k
pF
V
V
V
V
V
V
V
V
V
V
V
V
A
A
A
A