PIC17C44 Datasheet, PDF (154/241 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM/ROM Microcontroller

PIC17C4X
Applicable Devices 42 R42 42A 43 R43 44
FIGURE 17-1: PARAMETER MEASUREMENT INFORMATION
All timings are measure between high and low measurement points as indicated in the figures below.
INPUT LEVEL CONDITIONS
PORTC, D and E pins
All other input pins
Data in valid
Data in invalid
Data in valid
Data in invalid
VIH = 2.4V
VIL = 0.4V
VIH = 0.9VDD
VIL = 0.1VDD
OUTPUT LEVEL CONDITIONS
VOH = 0.7VDD
VDD/2
VOL = 0.3VDD
Data out valid
Data out invalid
0.1VDD
Rise Time
0.25V
0.25V
0.25V
0.25V
Output
Output ^driven
hi-impedance
0.9VDD
Fall Time
LOAD CONDITIONS
Load Condition 1
VDD/2
RL
Pin
CL
VSS
Load Condition 2
Pin
CL
VSS
RL = 464
CL ≤ 50 pF
DS30412C-page 154
© 1996 Microchip Technology Inc.