16F628 datasheet(133/168 Pages) MICROCHIP

133 / 168 page

 2002 Microchip Technology Inc.

Preliminary

DS40044A-page 131

PIC16F627A/628A/648A

17.0 ELECTRICAL SPECIFICATIONS

Absolute Maximum Ratings†

Ambient temperature under bias................................................................................................................. -40 to +125°C

Storage temperature .............................................................................................................................. -65°C to +150°C

Voltage on V

DD with respect to VSS ............................................................................................................ -0.3 to +6.5V

Voltage on MCLR and RA4 with respect to V

SS ............................................................................................-0.3 to +14V

Voltage on all other pins with respect to V

SS ....................................................................................-0.3V to VDD + 0.3V

Total power dissipation(1) ..................................................................................................................................... 800 mW

Maximum current out of V

SS pin ...........................................................................................................................300 mA

Maximum current into V

DD pin ..............................................................................................................................250 mA

Input clamp current, I

IK (VI < 0 or VI > VDD)

..................................................................................................................... ± 20 mA

Output clamp current, IOK (Vo < 0 or Vo >V

DD)

............................................................................................................... ± 20 mA

Maximum output current sunk by any I/O pin.......................................................................................................... 25 mA

Maximum output current sourced by any I/O pin .................................................................................................... 25 mA

Maximum current sunk by PORTA and PORTB (Combined)................................................................................ 200 mA

Maximum current sourced by PORTA and PORTB (Combined)........................................................................... 200 mA

Note 1: Power dissipation is calculated as follows: P

DIS = VDD x {IDD -

∑ IOH} + ∑ {(VDD-VOH) x IOH} + ∑(VOl x IOL)

† NOTICE: 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 those or any other conditions above those

indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for

extended periods may affect device reliability.

Note:

Voltage spikes below V

SS at the MCLR pin, inducing currents greater than 80 mA, may cause latchup. Thus,

a series resistor of 50-100

Ω should be used when applying a “low” level to the MCLR pin rather than pulling

this pin directly to V

SS.

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