TA = 0°C to +70°C; V
參數(shù)資料
型號(hào)： AT87C52X2-RLTUM
廠商： Atmel
文件頁數(shù)： 32/55頁
文件大?。?/td> 0K
描述： IC 8051 MCU 8K OTP 40MHZ 44VQFP
標(biāo)準(zhǔn)包裝： 800
系列： 87C
核心處理器： 8051
芯體尺寸： 8-位
速度： 40/20MHz
連通性： UART/USART
外圍設(shè)備： POR
輸入/輸出數(shù)： 32
程序存儲(chǔ)器容量： 8KB（8K x 8）
程序存儲(chǔ)器類型： OTP
RAM 容量： 256 x 8
電壓 - 電源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 44-LQFP
包裝： 托盤
38
TS8xCx2X2
4184I–8051–02/08
DC Parameters for Low
Voltage
TA = 0°C to +70°C; VSS = 0 V; VCC = 2.7 V to 5.5V ; F = 0 to 30 MHz.
TA = -40°C to +85°C; VSS = 0 V; VCC = 2.7 V to 5.5V ; F = 0 to 30 MHz.
Notes: 1. ICC under reset is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 17.), 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..
2. Idle ICC 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 15.).
3. Power Down ICC is measured with all output pins disconnected; EA = VSS, PORT 0 = VCC; XTAL2 NC.; RST = VSS (see Fig-
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. Typicals 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 IOL per port pin: 10 mA
Maximum IOL per 8-bit port:
Table 23. DC Parameters for Low Voltage
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 XTAL1, RST
0.2 VCC + 0.9
VCC + 0.5
V
VIH1
Input High Voltage, XTAL1, RST
0.7 VCC
VCC + 0.5
V
VOL
Output Low Voltage, ports 1, 2, 3 (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
0.9 VCC
V
IOH = -10 A
VOH1
Output High Voltage, port 0, ALE, PSEN
0.9 VCC
V
IOH = -40 A
IIL
Logical 0 Input Current ports 1, 2 and 3
-50
A
Vin = 0.45V
ILI
Input Leakage Current
±10
A
0.45V < Vin < VCC
ITL
Logical 1 to 0 Transition Current, ports 1, 2, 3
-650
A
Vin = 2.0 V
RRST
RST Pulldown Resistor
50
90 (5)
200
k
CIO
Capacitance of I/O Buffer
10
pF
Fc = 1 MHz
TA = 25°C
IPD
Power Down Current
20 (5)
10 (5)
50
30
A
VCC = 2.0 V to 5.5V(3)
VCC = 2.0 V to 3.3 V(3)
ICC
under
RESET
Power Supply Current Maximum values, X1
mode: (7)
1 + 0.2 Freq
(MHz)
at12MHz 3.4
at16MHz 4.2
mA
VCC = 3.3 V(1)
ICC
operating
Power Supply Current Maximum values, X1
mode: (7)
1 + 0.3 Freq
(MHz)
at12MHz 4.6
at16MHz 5.8
mA
VCC = 3.3 V(8)
ICC
idle
Power Supply Current Maximum values, X1
mode: (7)
0.15 Freq
(MHz) + 0.2
at12MHz 2
at16MHz 2.6
mA
VCC = 3.3 V(2)
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