SC28L202 datasheet(65/77 Pages) PHILIPS

65 / 77 page

Philips Semiconductors

Objective specification

SC28L202

Dual UART

2000 Feb 10

DC ELECTRICAL CHARACTERISTICS1,2,3 (NOMINAL 3.3 VOLTS)

Vcc = 3.3v

± 10% Ta = – 40 to +85 _C unless otherwise specified

LIMITS

UNIT

SYMBOL

PARAMETER

TEST CONDITIONS

Min

Typ

Max

VIL

Input low voltage

0.65

0.2*Vcc

VIH

Input high voltage (X1/CLK)

0.8*Vcc

1.7

VOL

Output low voltage

IOL = 4 ma

0.2

0.4

VOH

Output high voltage (except OD outputs)4

IOH = –400 ua

Vcc–0.5

Vcc–0.2

IIX1PD

X1/CLK input current – power down

VIN = 0 to VCC

–0.5

0.05

+0.5

µA

IILX1

X1/CLK input low current – operating

VIN = 0

–80

µA

IIHX1

X1/CLK input high current – operating

VIN = VCC

µA

Input leakage current:

All except input port pins

Input port pins5

VIN = 0 to VCC

–0.5

0.05

+0.5

µA

VIN = 0 to VCC

–8

0.5

+0.5

µA

IOZH

Output off current high, 3–State data bus

VIN = VCC

0.5

µA

IOZL

Output off current low, 3–State data bus

VIN = 0V

–0.5

µA

IODL

Open–drain output low current in off–state

VIN = 0

–0.5

µA

IODH

Open–drain output high current in off–state

VIN = VCC

0.5

µA

ICC

Power supply current:6

Operating mode

CMOS input levels

Power down mode7

CMOS input levels

≤1

5.0

µA

NOTES:

1. Parameters are valid over specified temperature range.

2. All voltage measurements are referenced to ground (GND). For testing, all inputs swing between 0.4V and 3.0V with a transition time of 5 ns

maximum. For X1/CLK this swing is between 0.4V and 4.4V. All time measurements are referenced at input voltages of 0.8V and 2.0V and

output voltages of 0.8V and 2.0V, as appropriate.

3. Typical values are at +25

_C, typical supply voltages, and typical processing parameters.

4. Test conditions for outputs: C L = 150 pF, except interrupt outputs. Test conditions for interrupt outputs: C L = 50 pF, R L = 2.7K ohm to VCC.

5. Input port pins have active pull up transistors that will source a typical 2

µA from Vcc when the input pins are at Vss. Input port pins at Vcc

source 0.0

µA

6. All outputs are disconnected. Inputs are switching between CMOS levels of VCC –0.2V and VSS + 0.2V.

7. See UART application note for power down currents of 10 ua or less.

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