Datasheet
© 2009 Microchip Technology Inc. DS39755C-page 37
PIC18F2423/2523/4423/4523
4.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
(†)
Ambient temperature under bias.............................................................................................................-40°C to +125°C
Storage temperature .............................................................................................................................. -65°C to +150°C
Voltage on any pin with respect to V
SS (except VDD and MCLR) ................................................... -0.3V to (VDD + 0.3V)
Voltage on V
DD with respect to VSS ......................................................................................................... -0.3V to +7.5V
Voltage on MCLR
with respect to VSS (Note 2) ......................................................................................... 0V to +13.25V
Total power dissipation (Note 1) ...............................................................................................................................1.0W
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, I
OK (VO < 0 or VO > VDD) .............................................................................................................. ±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 all ports .......................................................................................................................200 mA
Maximum current sourced by all ports ..................................................................................................................200 mA
Note 1: Power dissipation is calculated as follows:
Pdis = V
DD x {IDD – ∑ IOH} + ∑ {(VDD – VOH) x IOH} + ∑(VOL x IOL)
2: Voltage spikes below V
SS at the MCLR/VPP/RE3 pin, inducing currents greater than 80 mA, may cause
latch-up. Thus, a series resistor of 50-100Ω should be used when applying a “low” level to the MCLR
/VPP/
RE3 pin, rather than pulling this pin directly to V
SS.
Note: Other than some basic data, this section documents only the PIC18F2423/2523/4423/4523 devices’ specifi-
cations that differ from those of the PIC18F2420/2520/4420/4520 devices. For detailed information on the
electrical specifications shared by the PIC18F2423/2523/4423/4523 and PIC18F2420/2520/4420/4520
devices, see the “PIC18F2420/2520/4420/4520 Data Sheet” (DS39631).
† 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.