OL must be externally limited as follows" />
參數(shù)資料
型號： AT89C52-24PI
廠商： Atmel
文件頁數(shù)： 9/24頁
文件大?。?/td> 0K
描述： IC MICRO CTRL 24MHZ 40DIP
標準包裝： 9
系列： 89C
核心處理器： 8051
芯體尺寸： 8-位
速度： 24MHz
連通性： SIO，UART/USART
輸入/輸出數(shù)： 32
程序存儲器容量： 8KB（8K x 8）
程序存儲器類型： 閃存
RAM 容量： 256 x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 6 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 40-DIP（0.600"，15.24mm）
包裝： 管件
AT89C52
17
Notes:
1. Under steady state (non-transient) conditions, I
OL must be externally limited as follows:
Maximum I
OL per port pin: 10 mA
Maximum IOL per 8-bit port:
Port 0: 26 mA
Ports 1, 2, 3: 15 mA
Maximum total IOL for all output pins: 71 mA
If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test conditions.
2. Minimum V
CC for Power-down is 2V.
Absolute Maximum Ratings*
Operating Temperature.................................. -55°C to +125°C
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.
Storage Temperature ..................................... -65°C to +150°C
Voltage on Any Pin
with Respect to Ground .....................................-1.0V to +7.0V
Maximum Operating Voltage ............................................ 6.6V
DC Output Current...................................................... 15.0 mA
DC Characteristics
The values shown in this table are valid for T
A = -40°C to 85°C and VCC = 5.0V ± 20%, unless otherwise noted.
Symbol
Parameter
Condition
Min
Max
Units
V
IL
Input Low-voltage
(Except EA)-0.5
0.2 V
CC-0.1
V
VIL1
Input Low-voltage (EA)-0.5
0.2 VCC-0.3
V
IH
Input High-voltage
(Except XTAL1, RST)
0.2 V
CC+0.9
V
CC+0.5
V
IH1
Input High-voltage
(XTAL1, RST)
0.7 V
CC
V
CC+0.5
V
VOL
Output Low-voltage
(1) (Ports 1,2,3)
IOL = 1.6 mA
0.45
V
OL1
Output Low-voltage
(1)
(Port 0, ALE, PSEN)
I
OL = 3.2 mA
0.45
V
VOH
Output High-voltage
(Ports 1,2,3, ALE, PSEN)
IOH = -60 A, VCC = 5V ± 10%
2.4
V
I
OH = -25 A
0.75 V
CC
V
I
OH = -10 A
0.9 V
CC
V
VOH1
Output High-voltage
(Port 0 in External Bus Mode)
IOH = -800 A, VCC = 5V ± 10%
2.4
V
I
OH = -300 A
0.75 V
CC
V
I
OH = -80 A
0.9 V
CC
V
IIL
Logical 0 Input Current (Ports 1,2,3)
VIN = 0.45V
-50
A
I
TL
Logical 1 to 0 Transition Current
(Ports 1,2,3)
V
IN = 2V, VCC = 5V ± 10%
-650
A
ILI
Input Leakage Current (Port 0, EA)
0.45 < VIN < VCC
±10
A
RRST
Reset Pulldown Resistor
50
300
K
C
IO
Pin Capacitance
Test Freq. = 1 MHz, T
A = 25° C10
pF
ICC
Power Supply Current
Active Mode, 12 MHz
25
mA
Idle Mode, 12 MHz
6.5
mA
Power-down Mode(1)
V
CC = 6V
100
A
VCC = 3V
40
A
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