参数资料
型号: AT89S51-24JU
厂商: Atmel
文件页数: 15/31页
文件大小: 0K
描述: IC MCU 4K FLASH 24MHZ 44-PLCC
产品培训模块: MCU Product Line Introduction
标准包装: 27
系列: 89S
核心处理器: 8051
芯体尺寸: 8-位
速度: 24MHz
连通性: UART/USART
外围设备: WDT
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 ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 管件
产品目录页面: 616 (CN2011-ZH PDF)
22
2487D–MICRO–6/08
AT89S51
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 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.
23. DC Characteristics
The values shown in this table are valid for T
A = -40°C to 85°C and VCC = 4.0V to 5.5V, 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
VIH1
Input High Voltage
(XTAL1, RST)
0.7 VCC
VCC+0.5
V
VOL
Output Low Voltage(1) (Ports 1,2,3)
IOL = 1.6 mA
0.45
V
VOL1
Output Low Voltage(1)
(Port 0, ALE, PSEN)
IOL = 3.2 mA
0.45
V
OH
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
IOH = -10 A
0.9 VCC
V
OH1
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
IOH = -80 A
0.9 VCC
V
IIL
Logical 0 Input Current (Ports 1,2,3)
VIN = 0.45V
-50
A
ITL
Logical 1 to 0 Transition Current
(Ports 1,2,3)
VIN = 2V, VCC = 5V ± 10%
-300
A
ILI
Input Leakage Current (Port 0, EA)0.45 < VIN < VCC
±10
A
RRST
Reset Pulldown Resistor
50
300
K
Ω
CIO
Pin Capacitance
Test Freq. = 1 MHz, TA = 25°C
10
pF
I
CC
Power Supply Current
Active Mode, 12 MHz
25
mA
Idle Mode, 12 MHz
6.5
mA
Power-down Mode(2)
VCC = 5.5V
50
A
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