LPC47M192 datasheet(196/228 Pages) SMSC

196 / 228 page

SMSC DS – LPC47M192

Page 196

Rev. 03/30/05

DATASHEET

HARDWARE MONITORING BLOCK

(TA = 0

oC – 70oC, HVCC = +3.3 ± 10%)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

COMMENTS

Temperature-to-Digital

Converter Characteristics

Internal Temperature Accuracy

External

Diode

Sensor

Accuracy

Remote Source Current

High Level

Low Level

-3

-2

-5

-3

±1

5.5

130

7.5

µA

0C <= TA <= 700C

Resolution

-40

0C <= TS <= 1250C

0C <= TS <= 1000C

Resolution

IANG Type Buffer – Analog

Inputs

(Dx+,

Dx-,

+2.5V_IN,

+3.3V_IN, +5V_IN, +12V_IN)

Refer to “Appendix A – Thermal Diode Parameters” and “Appendix B – ADC

Voltage Conversion”.

VCC Supply Current Active

See “Supply Current” subsection in “Hardware Monitoring Block Specifications”

section above.

Notes

Voltages are measured from the local ground potential, unless otherwise specified.

Typicals are at TA=25°C and represent most likely parametric norm.

The maximum allowable power dissipation at any temperature is PD = (TJmax - TA) / QJA.

Timing specifications are tested at the TTL logic levels, VIL=0.4V for a falling edge and VIH=2.4V for a rising

edge. TRI-STATE output voltage is forced to 1.4V.

Note 1:

All leakage currents are measured with all pins in high impedance.

Note 2:

The minimum value given for VTR applies when VCC is active. When VCC is 0V, the minimum VTR is 0V.

Note 3:

Max ITRI with VCC = 3.3V (nominal) is 5mA

Max ITRI with VCC = 0V (nomial) is 250uA

Note 4:

TUE (Total Unadjusted Error) includes Offset, Gain and Linearity errors of the ADC.

Note 5:

Total Monitoring Cycle Time includes all temperature conversions, all analog input voltage conversions.

Note 6:

The cycle time for option 1 is 542.336ms (typical) if 128 measurements are averaged for the remote diode

temperature reading and 8 measurements are averaged for all voltage and the internal temperature reading. It is

67.792ms (typical) for option 2 if 16 measurements are averaged for the remote diode temperature reading and a

single measurement is taken for all voltage and the internal temperature reading (i.e., no averaging).

Note 7:

VOH min and IOH does not apply to the RESET# and THERM# open-drain functions.

11.3.1 CAPACITANCE VALUES FOR PINS

The input and output capacitance applies to both the Super I/O Block and the Hardware Monitoring Block digital pins.

CAPACITANCE TA = 25

oC; fc = 1MHz; VCC = 3.3V ±10%

LIMITS

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

TEST CONDITION

Clock Input Capacitance

CIN

Input Capacitance

CIN

Output Capacitance

COUT

All pins except pin

under test tied to AC

ground

Note:

The input capacitance of a port is measured at the connector pins.

LPC47M192 Datasheet(PDF) 196 Page - SMSC Corporation

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