AT80C51RA2-RLSIV datasheet(60/85 Pages) IRF

60 / 85 page

4188E–8051–08/06

AT/TS8xC51Rx2

11.4

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.

Notes:

1. ICC under reset is measured with all output pins disconnected; XTAL1 driven with TCLCH, TCHCL = 5 ns (see Figure 11-5.), VIL

= V

SS + 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..

2. 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 = V

CC; EA = RST = VSS (see Figure 11-3.).

3. Power-down ICC is measured with all output pins disconnected; EA = VSS, PORT 0 = VCC; XTAL2 NC.; RST = VSS (see Fig-

ure 11-4.).

Table 11-2.

DC Parameters for Low Voltage

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

VIH1

Input High Voltage, XTAL1, RST

0.7 VCC

VCC + 0.5

VOL

Output Low Voltage, ports 1, 2, 3, 4, 5 (6)

0.45

IOL = 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, 4, 5

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, 5

-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, 4,

-650

μA

Vin = 2.0 V

RRST

RST Pulldown Resistor

(5)

200

CIO

Capacitance of I/O Buffer

Fc = 1 MHz

TA = 25

°C

Power-down Current

20 (5)

10 (5)

μA

CC = 2.0 V to 5.5 V

(3)

CC = 2.0 V to 3.3 V

(3)

IPD

Power-down Current (Only for TS87C51RD2

S287-xxx Very Low power)

2 (5)

μA2.0 V < V

CC < 3.6 V

(3)

ICC

under

RESET

Power Supply Current Maximum values, X1

mode: (7)

1 + 0.2 Freq

(MHz)

@12MHz 3.4

@16MHz 4.2

CC = 3.3 V

(1)

ICC

operating

Power Supply Current Maximum values, X1

mode:

(7)

1 + 0.3 Freq

(MHz)

@12MHz 4.6

@16MHz 5.8

VCC = 3.3 V

(8)

idle

Power Supply Current Maximum values, X1

mode: (7)

0.15 Freq

(MHz) + 0.2

@12MHz 2

@16MHz 2.6

CC = 3.3 V

(2)

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