TPM749 datasheet(8/14 Pages) PHILIPS

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Philips Semiconductors

Product specification

TPM749

Microcontroller with TrackPoint

™ microcode from IBM

1996 May 01

DC ELECTRICAL CHARACTERISTICS (Continued)

Tamb = 0°C to +70°C, AVCC = 5V ±5, AVSS = 0V4

VCC = 5V ± 10%, VSS = 0V

TEST

LIMITS4

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP1

MAX

UNIT

Analog Inputs (A/D guaranteed only with quartz window covered.)

AVCC

Analog supply voltage10

AVCC = VCC±0.2V

4.5

5.5

AICC

Analog operating supply current

AVCC = 5.12V

3 9

AVIN

Analog input voltage

AVSS–0.2

AVCC+0.2

CIA

Analog input capacitance

tADS

Sampling time

8tCY

tADC

Conversion time

40tCY

Analog Inputs (A/D guaranteed only with quartz window covered.) (Continued)

Resolution

bits

ERA

Relative accuracy

±1

LSB

OSe

Zero scale offset

±1

LSB

Full scale gain error

0.4

MCTC

Channel to channel matching

±1

LSB

Crosstalk

0–100kHz

–60

NOTES:

1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and

functional operation of the device at these or any conditions other than those described in the AC and DC Electrical Characteristics section

of this specification is not implied.

2. Under steady state (non-transient) conditions, IOL must be externally limited as follows:

Maximum IOL per port pin:

10mA

Maximum IOL per 8-bit port:

26mA

Maximum total IOL for all outputs:

67mA

If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater than the listed

test conditions.

3. This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static

charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maxima.

4. Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to VSS unless otherwise

noted.

5. Power-down ICC is measured with all output pins disconnected; port 0 = VCC; X2, X1 n.c.; RST = VSS.

6. ICC is measured with all output pins disconnected; X1 driven with tCLCH, tCHCL = 5ns, VIL = VSS + 0.5V, VIH = VCC – 0.5V; X2 n.c.;

RST = port 0 = VCC. ICC will be slightly higher if a crystal oscillator is used.

7. Idle ICC is measured with all output pins disconnected; X1 driven with tCLCH, tCHCL = 5ns, VIL = VSS + 0.5V, VIH = VCC – 0.5V; X2 n.c.;

port 0 = VCC; RST = VSS.

8. Load capacitance for ports = 80pF.

9. The resistor ladder network is not disconnected in the power down or idle modes. Thus, to conserve power, the user may remove AVCC.

10. If the A/D function is not required, or if the A/D function is only needed periodically, AVCC may be removed without affecting the operation of

the digital circuitry. Contents of ADCON and ADAT are not guaranteed to be valid. If AVCC is removed, the A/D inputs must be lowered to

less than 0.5V. Digital inputs on P1.0–P1.4 will not function normally.

11. These parameters do not apply to P1.0–P1.4 if the A/D function is enabled.

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