87C752 Philips Semiconductors, 87C752 Datasheet - Page 14

• 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

1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and
2. Under steady state (non-transient) conditions, I
3. This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static
4. Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to V
5. Power-down I
6. I
7. Idle I
8. Load capacitance for ports = 80 pF.
9. The resistor ladder network is not disconnected in the power down or idle modes. Thus, to conserve power, the user may remove AV
10. If the A/D function is not required, or if the A/D function is only needed periodically, AV
11. These parameters do not apply to P1.0–P1.4 if the A/D function is enabled.
12. The input voltage slew rate should be <10 V/ms. The maximum slew rate depends on the clock frequency of the microcontroller. Designers
Philips Semiconductors
DC ELECTRICAL CHARACTERISTICS (Continued)
T
V
NOTES:
1999 Jul 23
amb
Analog Inputs (A/D guaranteed only with quartz window covered.)
AV
AI
AV
C
t
t
R
E
OS
G
M
C
CC
SYMBOL
ADS
ADC
RA
80C51 8-bit microcontroller family
2K/64 OTP/ROM, 5 channel 8 bit A/D, I
IA
e
t
CTC
CC
functional operation of the device at these or any conditions other than those described in the AC and DC Electrical Characteristics section
of this specification is not implied.
If I
test conditions.
charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maxima.
noted.
RST = port 0 = V
port 0 = V
the digital circuitry. Contents of ADCON and ADAT are not guaranteed to be valid. If AV
less than 0.5 V. Digital inputs on P1.0–P1.4 will not function normally.
should use low pass filters before the A/D inputs as a precaution to noise edges causing false readings.
CC
IN
CC
e
= 5 V
= 0 C to +70 C or –40 C to +85 C, AV
OL
is measured with all output pins disconnected; X1 driven with t
CC
exceeds the test condition, V
is measured with all output pins disconnected; X1 driven with t
10%, V
CC;
Analog supply voltage
Analog operating supply current
Analog input voltage
Analog input capacitance
Sampling time
Conversion time
Resolution
Relative accuracy
Zero scale offset
Full scale gain error
Channel to channel matching
Crosstalk
Maximum I
Maximum I
Maximum total I
RST = V
CC
SS
CC
is measured with all output pins disconnected; port 0 = V
= 0 V
. I
CC
SS
OL
OL
.
will be slightly higher if a crystal oscillator is used.
per port pin:
per 8-bit port:
PARAMETER
OL
for all outputs:
12
10
OL
may exceed the related specification. Pins are not guaranteed to sink current greater than the listed
CC
= 5 V 5, AV
OL
26 mA
67 mA
10 mA
must be externally limited as follows:
SS
2
= 0 V
(NOTE: This is 85 C spec.)
C, PWM, low pin count
AV
CONDITIONS
AV
CC
4
0–100kHz
CC
CLCH
TEST
= V
14
= 5.12V
CC
CLCH
, t
CHCL
CC
0.2V
, t
; X2, X1 n.c.; RST = V
CHCL
= 5 ns, V
= 5 ns, V
CC
CC
AV
IL
may be removed without affecting the operation of
= V
MIN
SS
is removed, the A/D inputs must be lowered to
4.5
IL
–0.2
SS
= V
+ 0.5 V, V
SS
SS
+ 0.5V, V
.
Typical
LIMITS
IH
= V
83C752/87C752
IH
4
1
CC
= V
– 0.5 V; X2 n.c.;
CC
SS
AV
40t
MAX
– 0.5 V; X2 n.c.;
8t
unless otherwise
CC
–60
Product specification
5.5
0.4
3
15
8
CY
1
1
1
9
CY
+0.2
CC
UNIT
LSB
LSB
LSB
mA
bits
pF
dB
%
V
V
s
s
.