PIC16F84A 18-pin Enhanced Flash/EEPROM 8-Bit MCU Data Sheet

PIC16F84AFIGURE 9-4:CLKOUT AND I/O TIMINGQ4 Q1 Q2 Q3OSC1CLKOUT10222311131419 181216I/O Pin(input)I/O Pin(output)TABLE 9-41715old valuenew value20, 21Note: All tests must be done with specified capacitive loads (Figure 9-2) 50 pF on I/O pins and CLKOUT.CLKOUT AND I/O TIMING REQUIREMENTSParameterNo. Sym Characteristic Min Typ† Max Units Conditions10 TosH2ckL OSC1↑ to CLKOUT↓ Standard — 15 30 * ns Note 110A Extended (LF) — 15 120 * ns Note 111 TosH2ckH OSC1↑ to CLKOUT↑ Standard — 15 30 * ns Note 111A Extended (LF) — 15 120 * ns Note 112 TckR CLKOUT rise time Standard — 15 30 * ns Note 112A Extended (LF) — 15 100 * ns Note 113 TckF CLKOUT fall time Standard — 15 30 * ns Note 113A Extended (LF) — 15 100 * ns Note 114 TckL2ioV CLKOUT ↓ to Port out valid — — 0.5TCY +20 * ns Note 115 TioV2ckH Port in valid before Standard 0.30TCY + 30 * — — ns Note 1CLKOUT ↑ Extended (LF) 0.30TCY + 80 * — — ns Note 116 TckH2ioI Port in hold after CLKOUT ↑ 0 * — — ns Note 117 TosH2ioV OSC1↑ (Q1 cycle) to Standard — — 125 * nsPort out valid Extended (LF) — — 250 * ns18 TosH2ioI OSC1↑ (Q2 cycle) to Standard 10 * — — nsPort input invalid(I/O in hold time)Extended (LF) 10 * — — ns19 TioV2osH Port input valid to Standard -75 * — — nsOSC1↑(I/O in setup time)Extended (LF) -175 * — — ns20 TioR Port output rise time Standard — 10 35 * ns20A Extended (LF) — 10 70 * ns21 TioF Port output fall time Standard — 10 35 * ns21A Extended (LF) — 10 70 * ns22 Tinp INT pin high Standard 20 * — — ns22A or low time Extended (LF) 55 * — — ns23 Trbp RB7:RB4 change INT Standard TOSC § — — ns23A high or low time Extended (LF) TOSC § — — ns* These parameters are characterized but not tested.† Data in "Typ" column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are nottested.§ By designNote 1: Measurements are taken in RC Mode where CLKOUT output is 4 x TOSC.DS35007A-page 50 Preliminary © 1998 Microchip Technology Inc.