SCE5780 datasheet(5/15 Pages) OSRAM

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SCE5780

2006-01-23

Input/Output Circuits

The following two figures show the input and output resis-

tor/diode networks used for ESD protection and to elimi-

nate substrate latch-up caused by input voltage

over/under shoot.

Inputs

Clock I/O

Electrical Characteristics (

over operating temperature)

Parameter

Min.

Typ.

Max.

Units

Conditions

4.5

5.0

5.5

—

3.0

—

5.5

—

CC (PWR DWN)

—

100

µA

CC=VLL=5.0 V, all inputs=0 V or VCC

LL (PWR DWN)

—

µA

—

2.0

CC=5.0 V

LL (20 dots/char)

1) 2)

—

240

345

CC=VLL=5.0 V, “#” displayed in 8 digits,

brightness=100%, I

P=100% at 25°C

—

–10

µA

CC=5.0 V, all inputs=0 V

—

µA

CC=VIN=5.0 V (all inputs)

3.5

—

CC=4.5 V to 5.5 V

—

1.5

CC=4.5 V to 5.5 V

OH (CLK I/O)

—

–8.9

—

CC=4.5 V, VOH=2.4 V

OL (CLK I/O)

—

1.6

—

CC=4.5 V, VOH=0.4 V

JC-pin

—

°C/W

—

Internal OSC Frequency

120

—

347

kHz

CC=5.0 V, CLKSEL=1, Prescale= ÷1

External OSC Frequency

120

—

347

kHz

CC=5.0 V, CLKSEL=0, Prescale= ÷1

External OSC Frequency with Prescale

1.92

—

5.55

MHz

CC=5.0 V, CLKSEL=0, Prescale= ÷16

Mux Frequency

375

768

1086

—

Notes:

1) Peak current=1.87 x I

LLx ILL varies with VLL Normalized curve, Figure „ILL Variance“ (page 11).

2) Unused inputs must be tied high.

3) Mux rate=[OSC Frequency/(64 x 7)].

4) External oscillator must be stopped during power down mode for minimum current.

IDCD5021

GND

1 k

Ω

Input

IDCD5026

GND

1 k

Ω

Input/Output

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