參數(shù)資料
型號(hào)： P87C749EBPN
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 微控制器/微處理器
英文描述： 80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count
中文描述： 8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PDIP28
封裝： PLASTIC, SOT-117-1, DIP-28
文件頁(yè)數(shù)： 13/22頁(yè)
文件大?。?/td> 200K
代理商： P87C749EBPN
Philips Semiconductors
Preliminary specification
83C749/87C749
80C51 8-bit microcontroller family
2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count
1998 Apr 23
13
DC ELECTRICAL CHARACTERISTICS
(Continued)
T
amb
= 0
°
C to +70
°
C, AV
CC
= 5V
±
5, AV
SS
= 0V
4
V
CC
= 5V
±
10%, V
SS
= 0V
TEST
LIMITS
4
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
1
MAX
UNIT
Analog Inputs
(A/D guaranteed only with quartz window covered.) (Continued)
R
Resolution
8
bits
E
RA
Relative accuracy
±
1
LSB
OS
e
Zero scale offset
±
1
LSB
G
e
Full scale gain error
0.4
%
M
CTC
Channel to channel matching
±
1
LSB
C
t
Crosstalk
0–100kHz
–60
dB
NOTES:
1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and
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.
2. Under steady state (non-transient) conditions, I
OL
must be externally limited as follows:
Maximum I
OL
per port pin:
10mA
(NOTE: This is 85
°
C spec.)
Maximum I
OL
per 8-bit port:
26mA
Maximum total I
OL
for all outputs:
67mA
If I
OL
exceeds the test condition, V
OL
may exceed the related specification. Pins are not guaranteed to sink current greater than the listed
test conditions.
3. This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static
charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maxima.
4. Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to V
SS
unless otherwise
noted.
5. Power-down I
is measured with all output pins disconnected; port 0 = V
CC
; X2, X1 n.c.; RST = V
.
6. I
is measured with all output pins disconnected; X1 driven with t
, t
CHCL
= 5ns, V
IL
= V
SS
+ 0.5V, V
IH
= V
CC
– 0.5V; X2 n.c.;
RST = port 0 = V
. I
will be slightly higher if a crystal oscillator is used.
7. Idle I
is measured with all output pins disconnected; X1 driven with t
CLCH
, t
CHCL
= 5ns, V
IL
= V
SS
+ 0.5V, V
IH
= V
CC
– 0.5V; X2 n.c.;
port 0 = V
RST = V
.
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
CC
.
10.If the A/D function is not required, or if the A/D function is only needed periodically, AV
CC
may be removed without affecting the operation of
the digital circuitry. Contents of ADCON and ADAT are not guaranteed to be valid. If AV
CC
is removed, the A/D inputs must be lowered to
less than 0.5V. Digital inputs on P1.0–P1.4 will not function normally.
11. These parameters do not apply to P1.0–P1.4 if the A/D function is enabled.
AC ELECTRICAL CHARACTERISTICS
T
amb
= 0
°
C to +70
°
C or –40
°
C to +85
°
C, V
CC
= 5V
±
10%, V
SS
= 0V
4, 8
16MHz CLOCK
VARIABLE CLOCK
SYMBOL
PARAMETER
MIN
MAX
MIN
MAX
UNIT
1/t
CLCL
Oscillator frequency:
3.5
16
MHz
External Clock (Figure 4)
t
CHCX
High time
20
20
ns
t
CLCX
Low time
20
20
ns
t
CLCH
Rise time
20
20
ns
t
CHCL
Fall time
20
20
ns
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