TS80C58X2_14 datasheet(44/62 Pages) ATMEL

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4431E–8051–04/06

AT/TS8xC54/8X2

19.4

DC Parameters for Low Voltage

TA = 0

°C to +70°C; V

SS = 0 V; VCC = 2.7 V to 5.5 V ± 10%; F = 0 to 30 MHz.

TA = -40

°C to +85°C; V

SS = 0 V; VCC = 2.7 V to 5.5 V ± 10%; F = 0 to 30 MHz.

Table 19-2.

DC Parameters for Low Voltage

CC under reset is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure

19-5.), V

IL = VSS + 0.5 V,

IH = VCC - 0.5V; XTAL2 N.C.; EA = RST = Port 0 = VCC. ICC would be slightly higher if a crystal oscillator used..

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 19-3.).

Power Down I

CC is measured with all output pins disconnected; EA = VSS, PORT 0 = VCC; XTAL2 NC.; RST = VSS

(see Figure 19-4.).

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.

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

VIL

Input Low Voltage

-0.5

0.2 VCC - 0.1

VIH

Input High Voltage except XTAL1, RST

0.2 VCC + 0.9

VCC + 0.5

IH1

Input High Voltage, XTAL1, RST

0.7 V

CC + 0.5

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

0.45

OL = 0.8 mA

(4)

VOL1

Output Low Voltage, port 0, ALE, PSEN

(6)

0.45

IOL = 1.6 mA

(4)

VOH

Output High Voltage, ports 1, 2, 3

0.9 VCC

VIOH = -10 μA

VOH1

Output High Voltage, port 0, ALE, PSEN

0.9 VCC

VIOH = -40 μA

Logical 0 Input Current ports 1, 2 and 3

-50

μAVin = 0.45 V

Input Leakage Current

±10

μA

0.45 V < Vin < V

ITL

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

-650

μAVin = 2.0 V

RRST

RST Pulldown Resistor

90 (5)

200

CIO

Capacitance of I/O Buffer

Fc = 1 MHz

TA = 25

°C

IPD

Power Down Current

20 (5)

10 (5)

μA

VCC = 2.0 V to 5.5 V

(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)

@12MHz 3.4

@16MHz 4.2

VCC = 3.3 V

(1)

operating

Power Supply Current Maximum values, X1

mode: (7)

1 + 0.3 Freq

(MHz)

@12MHz 4.6

@16MHz 5.8

CC = 3.3 V

(8)

ICC

idle

Power Supply Current Maximum values, X1

mode: (7)

0.15 Freq (MHz)

+ 0.2

@12MHz 2

@16MHz 2.6

VCC = 3.3 V

(2)

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