T89C51AC2-RLSI-M datasheet(103/117 Pages) ATMEL

103 / 117 page

Draft.A - March 30, 2001

103

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T89C51AC2

18.2. DC Parameters for Standard Voltage

TA = -40

°Cto+85°C; V

SS =0V;VCC =5V ± 10%;F=0to40 MHz.

Table 24. DC Parameters in Standard Voltage

NOTES

Operating ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 96.), VIL = VSS + 0.5 V,

VIH = VCC - 0.5V; XTAL2 N.C.; EA = RST = Port 0 = VCC. ICC would be slightly higher if a crystal oscillator used (see Figure 93.).

Idle ICC is measured with all output pins disconnected; XTAL1 driven with TCLCH,TCHCL = 5 ns, VIL =VSS + 0.5 V, VIH =VCC - 0.5 V; XTAL2

N.C; Port 0 = VCC; EA = RST = VSS (see Figure 94.).

Power Down ICC is measured with all output pins disconnected; EA=VSS,PORT0=VCC; XTAL2 NC.; RST = VSS (see Figure 95.). In addition,

the WDT must be inactive and the POF ﬂag must be set.

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

VIL

Input Low Voltage

-0.5

0.7(7)

VIH

Input High Voltage except XTAL1, RST

0.2 VCC + 0.9

VCC + 0.5

VIH1

Input High Voltage, XTAL1, RST

0.7 VCC

VCC + 0.5

VOL

Output Low Voltage, ports 1, 2, 3 and 4(6)

0.3

0.45

1.0

IOL = 100 µA

(4)

IOL = 1.6 mA

(4)

IOL = 3.5 mA

(4)

VOL1

Output Low Voltage, port 0, ALE, PSEN (6)

0.3

0.45

1.0

IOL = 200 µA

(4)

IOL = 3.2 mA

(4)

IOL = 7.0 mA

(4)

VOH

Output High Voltage, ports 1, 2, 3, 4 and 5

VCC - 0.3

VCC - 0.7

VCC - 1.5

IOH = -10 µA

IOH = -30 µA

IOH = -60 µA

VCC = 5 V ± 10%

VOH1

Output High Voltage, port 0, ALE, PSEN

VCC - 0.3

VCC - 0.7

VCC - 1.5

IOH = -200 µA

IOH = -3.2 mA

IOH = -7.0 mA

VCC = 5 V ± 10%

RRST

RST Pulldown Resistor

40 (5)

200

Ω

IIL

Logical 0 Input Current ports 1, 2, 3 and 4

-50

µA

Vin = 0.45 V

ILI

Input Leakage Current

±10

µA

0.45 V < Vin < VCC

ITL

Logical 1 to 0 Transition Current, ports 1, 2, 3

and 4

-650

µA

Vin = 2.0 V

CIO

Capacitance of I/O Buffer

Fc = 1 MHz

TA = 25

°C

IPD

Power Down Current

120

350

µA

4.5 V < VCC < 5.5 V

(3)

ICC

Power Supply Current (Typical)

ICCOP = 0.5 Freq (MHz) + 3 mA

ICCIDLE = 0.3 Freq (MHz) + 2 mA

T89C51AC2-RLSI-M 数据表(PDF) 103 Page - ATMEL Corporation

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