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参数资料
型号： AT89C51RB2-SLSUM
厂商： Atmel
文件页数： 12/127页
文件大小： 0K
描述： IC 8051 MCU FLASH 16K 44PLCC
产品培训模块： MCU Product Line Introduction
标准包装： 972
系列： 89C
核心处理器： 8051
芯体尺寸： 8-位
速度： 60MHz
连通性： SPI，UART/USART
外围设备： POR，PWM，WDT
输入/输出数： 32
程序存储器容量： 16KB（16K x 8）
程序存储器类型： 闪存
RAM 容量： 1.25K x 8
电压 - 电源 (Vcc/Vdd)： 2.7 V ~ 5.5 V
振荡器型： 外部
工作温度： -40°C ~ 85°C
封装/外壳： 44-LCC（J 形引线）
包装： 管件
配用： AT89OCD-01-ND - USB EMULATOR FOR AT8XC51 MCU
AT89STK-11-ND - KIT STARTER FOR AT89C51RX2
109
AT89C51RB2/RC2
4180E–8051–10/06
DC Parameters for Low
Voltage
TA = 0
°C to +70°C; V
SS = 0V; VCC = 2.7V to 3.6V; F = 0to 40 MHz
TA = -40
°C to +85°C; V
SS = 0V; VCC = 2.7V to 3.6V; F = 0 to 40 MHz
Notes:
1. Operating ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 49.), VIL =
VSS + 0.5V,
VIH = VCC - 0.5V; XTAL2 N.C.; EA = RST = Port 0 = VCC. ICC would be slightly higher if a crystal oscillator used (see Figure
46).
2. Idle I
CC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns, VIL = VSS + 0.5V, VIH = VCC -
0.5V; XTAL2 N.C; Port 0 = VCC; EA = RST = VSS (see Figure 47).
3. Power Down ICC is measured with all output pins disconnected; EA = VSS, PORT 0 = VCC; XTAL2 NC.; RST = VSS (see Fig-
ure 48).
4. Capacitance loading on Ports 0 and 2 may cause spurious noise pulses to be superimposed on the VOLs 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 VOL 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, 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 and 3: 15 mA
Maximum total IOL for all output pins: 71 mA
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
VIL
Input Low Voltage
-0.5
0.2 VCC - 0.1
V
VIH
Input High Voltage except RST, XTAL1
0.2 VCC + 0.9
VCC + 0.5
V
VIH1
Input High Voltage, RST, XTAL1
0.7 VCC
VCC + 0.5
V
VOL
Output Low Voltage, ports 1, 2, 3, 4(6)
0.45
V
IOL = 0.8 mA
(4)
VOL1
Output Low Voltage, port 0, ALE, PSEN (6)
0.45
V
IOL = 1.6 mA
(4)
VOH
Output High Voltage, ports 1, 2, 3, 4
0.9 VCC
VIOH = -10 μA
VOH1
Output High Voltage, port 0, ALE, PSEN
0.9 VCC
VIOH = -40 μA
IIL
Logical 0 Input Current ports 1, 2, 3, 4
-50
μAV
IN = 0.45 V
ILI
Input Leakage Current for P0 only
±10
μA
0.45V < VIN < VCC
ITL
Logical 1 to 0 Transition Current, ports 1, 2, 3,
-650
μAV
IN = 2.0V
RRST
RST Pulldown Resistor
50
200 (5)
250
k
Ω
CIO
Capacitance of I/O Buffer
10
pF
Fc = 3 MHz
TA = 25
°C
I
PD
Power Down Current
10 (5)
50
μA
VCC = 2.7V to
3.6V(3)
I
CCOP
Power Supply Current on normal mode
0.4 x Frequency (MHz) + 5
mA
V
CC = 3.6 V
(1)
I
CCIDLE
Power Supply Current on idle mode
0.3 x Frequency (MHz) + 5
mA
V
CC = 3.6 V
(2)
ICCProg
Power Supply Current during flash Write / Erase
0.4 x
Frequency
(MHz) +
20
mA
VCC = 5.5V
(8)
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