Datasheet

 2010 Microchip Technology Inc. Preliminary DS39964B-page 553
PIC18F47J53 FAMILY
FIGURE 31-23: USB SIGNAL TIMING
TABLE 31-33: USB LOW-SPEED TIMING REQUIREMENTS
TABLE 31-34: USB FULL-SPEED REQUIREMENTS
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
T
LR Transition Rise Time 75 — 300 ns CL = 200 to 600 pF
T
LF Transition Fall Time 75 — 300 ns CL = 200 to 600 pF
TLRFM Rise/Fall Time Matching 80 — 125 %
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
T
FR Transition Rise Time 4 — 20 ns CL = 50 pF
TFF Transition Fall Time 4 — 20 ns CL = 50 pF
T
FRFM Rise/Fall Time Matching 90 — 111.1 %
VCRS
USB Data Differential Lines
90%
10%
TLR, TFR
TLF, TFF