SCD5580 datasheet(3/15 Pages) SIEMENS

3 / 15 page

2–3

SCD5580/5581/5582/5583/5584

Electrical Characteristics (over Operating Temperature)

Notes:

1. Peak current=5⁄3 X ICC.

2. Unused inputs must be tied high.

3. Contact Siemens for 3.3 volt operation.

4. External oscillator must be stopped if being used to maintain an ICC<50 µ

Input/Output Circuits

Figures 3 and 4 show the input and output resistor/diode networks used

for ESD protection and to eliminate substrate latch-up caused by input

voltage over/under shoot.A.

Figure 3. Inputs

Figure 4. Clock I/O

Parameter

Min.

Typ.

Max.

Units

Condition

VCC

4.5

5.0

5.5

ICC (Power Down Mode) (4)

µA

VCC=5 V, all inputs=0 V or VCC

ICC 8 digits, 16 dots/character

200

290

VCC=5 V, “#” displayed in all 8 digits at 100%

brightness at 25

°C

IIL Input Current

–10

µA

VCC=5 V, VIN=0 V (all inputs)

IIH Input Current

+10

µA

VCC=VIN=5.0 V (all inputs)

VIH

3.5

VCC=4.5 to 5 V

VIL

1.5

VCC=4.5 to 5 V

IOH (Clk I/O)

–8.9

VCC=4.5 V, VOH=2.4 V

IOL (Clk I/O)

1.6

VCC=4.5 V, VOH=0.4 V

JC-PIN

°C/W

Fext External Clock Input Frequency

120

347

KHz

VCC=5 V, CLKSEL=0

FOSC Internal Clock Input Frequency

120

347

KHz

VCC=5 V, CLKSEL=1

Clock I/O Bus Loading

240

Clock Out Rise Time

500

VCC=4.5 V, VOH=2.4 V

Clock Out Fall Time

500

VCC=4.5 V, VOH=2.4 V

FM, Digit

375

768

1086

VCC

1 K

Ω

GND

input

VCC

1 K

Ω

GND

input/output

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