參數(shù)資料
型號： AT83C51RB2XXX-SLSIL
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Microcontroller
中文描述： 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PQCC44
封裝： PLASTIC, LCC-44
文件頁數(shù)： 67/81頁
文件大小： 1082K
代理商： AT83C51RB2XXX-SLSIL
68
AT80C51RD2/AT83C51Rx2
4113A–8051–09/02
DC Parameters for Low
Voltage
T
A
= 0
°
C to +70
°
C; V
SS
= 0V; V
CC
= 2.7V to 3.6V; F = 10 to 40 MHz
T
A
= -40
°
C to +85
°
C; V
SS
= 0V; V
CC
= 2.7V to 3.6V; F = 10 to 40 MHz
Notes:
1. Operating I
CC
is measured with all output pins disconnected; XTAL1 driven with T
CLCH
, T
CHCL
= 5 ns (see Figure 26.),
V
IL
= V
SS
+ 0.5V,
V
IH
= V
CC
- 0.5V; XTAL2 N.C.; EA = RST = Port 0 = V
CC
. I
CC
would be slightly higher if a crystal oscillator used (see Figure
23).
2. Idle I
is measured with all output pins disconnected; XTAL1 driven with T
CLCH
, T
CHCL
= 5 ns, V
IL
= V
SS
+ 0.5V,
V
IH
= V
CC
- 0.5V; XTAL2 N.C; Port 0 = V
CC
; EA = RST = V
SS
(see Figure 24).
3. Power-down I
CC
is measured with all output pins disconnected; EA = V
SS
, PORT 0 = V
CC
; XTAL2 NC.; RST = V
SS
(see Fig-
ure 25).
4. Capacitance loading on Ports 0 and 2 may cause spurious noise pulses to be superimposed on the V
OL
s of ALE and Ports 1
and 3. The noise is due to external bus capacitance discharging into the Port 0 and Port 2 pins when these pins make 1 to 0
transitions during bus operation. In the worst cases (capacitive loading 100pF), the noise pulse on the ALE line may exceed
0.45V with maxi V
OL
peak 0.6V. A Schmitt Trigger use is not necessary.
5. Typical are based on a limited number of samples and are not guaranteed. The values listed are at room temperature and
5V.
6. Under steady state (non-transient) conditions, I
OL
must be externally limited as follows:
Maximum I
OL
per port pin: 10 mA
Maximum I
per 8-bit port:
Port 0: 26 mA
Ports 1, 2 and 3: 15 mA
Maximum total I
OL
for all output pins: 71 mA
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.
7. For other values, please contact your sales office.
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
V
IL
Input Low Voltage
-0.5
0.2 V
CC
- 0.1
V
V
IH
Input High Voltage except RST, XTAL1
0.2 V
CC
+ 0.9
V
CC
+ 0.5
V
V
IH1
Input High Voltage, RST, XTAL1
0.7 V
CC
V
CC
+ 0.5
V
V
OL
Output Low Voltage, ports 1, 2, 3, 4
(6)
0.45
V
I
OL
= 0.8 mA
(4)
V
OL1
Output Low Voltage, port 0, ALE, PSEN
(6)
0.45
V
I
OL
= 1.6 mA
(4)
V
OH
Output High Voltage, ports 1, 2, 3, 4
0.9 V
CC
V
I
OH
= -10
μ
A
V
OH1
Output High Voltage, port 0, ALE, PSEN
0.9 V
CC
V
I
OH
= -40
μ
A
I
IL
Logical 0 Input Current ports 1, 2, 3, 4
-50
μ
A
V
IN
= 0.45V
I
LI
Input Leakage Current
±
10
μ
A
0.45V < V
IN
< V
CC
I
TL
Logical 1 to 0 Transition Current, ports 1, 2, 3,
-650
μ
A
V
IN
= 2.0V
R
RST
RST Pulldown Resistor
50
200
(5)
250
k
CIO
Capacitance of I/O Buffer
10
pF
Fc = 3 MHz
T
A
= 25
°
C
I
PD
Power-down Current
10
(5)
50
μ
A
V
= 2.7V to
3.6V
(3)
I
CCOP
Power Supply Current on normal mode
0.31 x Frequency (MHz) + 4
mA
V
CC
= 3.6V
(1)
I
CCIDLE
Power Supply Current on idle mode
0.2 x Frequency (MHz) + 4
mA
V
CC
= 3.6V
(2)
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