参数资料
| 型号： | AT89C51-24PC |
| 厂商： | Atmel |
| 文件页数： | 2/17页 |
| 文件大小： | 0K |
| 描述： | IC MICRO CTRL 24MHZ 40DIP |
| 标准包装： | 9 |
| 系列： | 89C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 24MHz |
| 连通性： | UART/USART |
| 输入/输出数： | 32 |
| 程序存储器容量： | 4KB（4K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 128 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4 V ~ 6 V |
| 振荡器型： | 内部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 40-DIP（0.600"，15.24mm） |
| 包装： | 管件 |
AT89C51
10
Absolute Maximum Ratings*
Notes:
1. Under steady state (non-transient) conditions, IOL must be externally limited as follows:
Maximum I
OL per port pin: 10 mA
Maximum I
OL per 8-bit port: Port 0: 26 mA
Ports 1, 2, 3: 15 mA
Maximum total I
OL for all output pins: 71 mA
If I
OL 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.
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
TA = -40°C to 85°C, VCC = 5.0V ± 20% (unless otherwise noted)
Symbol
Parameter
Condition
Min
Max
Units
VIL
Input Low-voltage
(Except EA)
-0.5
0.2 VCC - 0.1
V
IL1
Input Low-voltage (EA)
-0.5
0.2 V
CC - 0.3
V
IH
Input High-voltage
(Except XTAL1, RST)
0.2 V
CC + 0.9
V
CC + 0.5
V
VIH1
Input High-voltage
(XTAL1, RST)
0.7 VCC
VCC + 0.5
V
OL
Output Low-voltage
(1) (Ports 1,2,3)
I
OL = 1.6 mA
0.45
V
OL1
Output Low-voltage(1)
(Port 0, ALE, PSEN)
I
OL = 3.2 mA
0.45
V
OH
Output High-voltage
(Ports 1,2,3, ALE, PSEN)
I
OH = -60 A, VCC = 5V ± 10%
2.4
V
I
OH = -25 A
0.75 V
CC
V
IOH = -10 A
0.9 VCC
V
OH1
Output High-voltage
(Port 0 in External Bus Mode)
I
OH = -800 A, VCC = 5V ± 10%
2.4
V
I
OH = -300 A0.75 VCC
V
IOH = -80 A
0.9 VCC
V
I
IL
Logical 0 Input Current (Ports 1,2,3)
V
IN = 0.45V
-50
A
I
TL
Logical 1 to 0 Transition Current
(Ports 1,2,3)
V
IN = 2V, VCC = 5V ± 10%
-650
A
I
LI
Input Leakage Current (Port 0, EA)0.45 < V
IN < VCC
±10
A
RRST
Reset Pull-down Resistor
50
300
K
CIO
Pin Capacitance
Test Freq. = 1 MHz, TA = 25°C
10
pF
I
CC
Power Supply Current
Active Mode, 12 MHz
20
mA
Idle Mode, 12 MHz
5
mA
Power-down Mode
(2)
V
CC = 6V
100
A
V
CC = 3V
40
A
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