84C44X datasheet(34/38 Pages) PHILIPS

34 / 38 page

October 1994

Philips Semiconductors

Product speciﬁcation

8-bit microcontrollers with OSD and VST

84C44X; 84C64X; 84C84X

Notes

1. VIL = VSS; VIH = VDD; all outputs and sense input lines unloaded. All open drain ports connected to VSS.

2. Crystal is connected between XTAL1 and XTAL2; T1 = VSS; INT/T0 = VDD.

17 AC CHARACTERISTICS

VDD = 5 V; Tamb = −20 to +70 °C; all voltages with respect to VSS; unless otherwise speciﬁed.

Note

1. Oscillator with three (3) options for optimum use.

AFC characteristics; Port DP1.7/AFC

VAI

comparator analog input voltage

VSS

−

VDD

VAE

conversion error range

−

± 0.5

LSB

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Oscillator

fXTAL

crystal frequency; note 1

−

10.0

MHz

fOSC-XTAL

oscillator frequency; option 1

gm = 0.4 mS (typ.)

−

6.0

MHz

fOSC-PXE

not allowed

MHz

fOSC-XTAL

oscillator frequency; option 2

gm = 1.6 mS (typ.)

4.0

−

10.0

MHz

fOSC-PXE

1.0

−

6.0

MHz

fOSC-XTAL

oscillator frequency; option 3

gm = 4.5 mS (typ.)

not allowed

MHz

fOSC-PXE

3.0

−

10.0

MHz

CXTAL1

external capacitance at XTAL1

with XTAL resonator

not required

with PXE resonator

−

100

CXTAL2

external capacitance at XTAL2

with XTAL resonator

not required

with PXE resonator

−

100

fDOSC

on-screen-display clock frequency

4.0

8.0

10.0

MHz

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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