© 1999 Scenix Semiconductor, Inc. All rights reserved. - 36 - www.scenix.com SX18AC  / SX20AC / SX28AC 17.2 DC Characteristics Operating Temperature 0° C <= Ta <= +70° C (Commercial) Symbol Parameter Conditions Min Typ Max Units V_dd Supply Voltage 2.5 - 5.5 V V_por V_dd start voltage to ensure
Power-On Reset V_ss - - V S_Vdd V_dd rise rate 0.05 - - V/ms I_dd Supply Current, active V_dd = 5.0V, F_osc = 50 MHz V_dd = 5.0V, F_osc = 4 MHz internal V_dd = 2.5V, F_osc = 20 MHz - 65  6
12 - mA
mA
mA I_pd Supply Current, power down V_dd = 5.5V, WDT enabled V_dd = 5.5V, WDT disabled V_dd = 2.5V, WDT enabled V_dd = 2.5V, WDT disabled - TBD  1.0
TBD 500 - µA
µA
µA
nA V_ih, V_il Input Levels
MCLR, OSC1, RTCC Logic High Logic Low All Other Inputs
CMOS Logic High    Logic Low
TTL Logic High Logic Low 0.8V_dd V_ss 0.7V_dd V_ss 2.0
V_ss V_dd 0.2V_dd V_dd 0.3V_dd V_dd 0.8 V
V V
V V
V I_il Input Leakage Current V_in = V_dd or V_ss -1.0 +1.0 µA I_ip Weak Pullup Current V_dd = 5.0V, V_in = 0V V_dd = 2.5V, V_in = 0V 400 80 µA
µA V_oh Output High Voltage
OSC2, Ports B, C Port A Ioh = 20mA, Vdd = 4.5V
Ioh = 12mA, Vdd = 2.5V
Ioh = 30mA, Vdd = 4.5
Ioh = 18 mA, Vdd = 2.5V Vdd-0.7
Vdd-0.7
Vdd-0.7
Vdd-0.7 V
V
V
V V_ol Output Low Voltage
All Ports, OSC2 Iol = 30mA, Vdd = 4.5V
Iol = 18mA, Vdd = 2.5V 0.6
0.6 V
V