83C749 Philips Semiconductors, 83C749 Datasheet - Page 13

• Manufacturer Part Number: 83C749
• Description: 80C51 8-bit microcontroller family 2K/64 OTP/ROM/ 5 channel 8-bit A/D/ 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 = 80pF.
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.
Philips Semiconductors
DC ELECTRICAL CHARACTERISTICS (Continued)
T
V
NOTES:
AC ELECTRICAL CHARACTERISTICS
T
1998 Apr 23
amb
Analog Inputs (A/D guaranteed only with quartz window covered.) (Continued)
R
E
OS
G
M
C
amb
1/t
External Clock (Figure 4)
t
t
t
t
CC
SYMBOL
CHCX
CLCX
CLCH
CHCL
RA
80C51 8-bit microcontroller family
2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count
e
t
CTC
SYMBOL
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 0.5V. Digital inputs on P1.0–P1.4 will not function normally.
CLCL
CC
e
= 5V
= 0 C to +70 C, AV
= 0 C to +70 C or –40 C to +85 C, V
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;
Resolution
Relative accuracy
Zero scale offset
Full scale gain error
Channel to channel matching
Crosstalk
Maximum I
Maximum I
Maximum total I
RST = V
Oscillator frequency:
High time
Low time
Rise time
Fall time
CC
SS
CC
is measured with all output pins disconnected; port 0 = V
= 0V
. I
CC
CC
SS
OL
OL
= 5V 5, AV
.
will be slightly higher if a crystal oscillator is used.
per port pin:
per 8-bit port:
PARAMETER
OL
for all outputs:
PARAMETER
OL
SS
may exceed the related specification. Pins are not guaranteed to sink current greater than the listed
CC
= 0V
= 5V 10%, V
4
OL
26mA
67mA
10mA
must be externally limited as follows:
SS
= 0V
(NOTE: This is 85 C spec.)
CONDITIONS
4, 8
0–100kHz
CLCH
TEST
13
CLCH
, t
CHCL
CC
MIN
20
20
, t
16MHz CLOCK
; X2, X1 n.c.; RST = V
CHCL
= 5ns, V
= 5ns, V
CC
IL
CC
may be removed without affecting the operation of
MAX
= V
MIN
is removed, the A/D inputs must be lowered to
20
20
IL
SS
= V
+ 0.5V, V
SS
SS
+ 0.5V, V
.
LIMITS
TYP
VARIABLE CLOCK
MIN
IH
3.5
20
20
= V
1
83C749/87C749
IH
4
CC
= V
– 0.5V; X2 n.c.;
CC
SS
Preliminary specification
– 0.5V; X2 n.c.;
MAX
unless otherwise
MAX
–60
0.4
16
20
20
8
1
1
1
UNIT
CC
MHz
UNIT
LSB
LSB
LSB
bits
ns
ns
ns
ns
dB
%
.