PIC18F2455_09 Datasheet, PDF (195/438 Pages) Microchip Technology – 28/40/44-Pin,High-Performance,Enhanced Flash,USB Microcontrollers with nanoWatt Technology

PIC18F2455/2550/4455/4550
FIGURE 18-2:
TIMING FOR MICROCONTROLLER WRITE ADDRESS, WRITE DATA AND
READ DATA (NO WAIT STATES)
FOSC/4
OESPP
CSSPP
CK1SPP
CK2SPP
SPP<7:0>
ADDR
Write Address
MOVWF SPPEPS
DATA
Write Data
MOVWF SPPDATA
DATA
Read Data
MOVF SPPDATA, W
FIGURE 18-3:
TIMING FOR USB WRITE ADDRESS AND DATA (4 WAIT STATES)
USB Clock
OESPP
CSSPP
CK1SPP
CK2SPP
SPP<7:0>
Write Address
2 Wait States
2 Wait States
Write Data
2 Wait States
2 Wait States
FIGURE 18-4:
USB Clock
OESPP
CSSPP
CK1SPP
CK2SPP
SPP<7:0>
TIMING FOR USB WRITE ADDRESS AND READ DATA (4 WAIT STATES)
Write Address
Read Data
2 Wait States
2 Wait States
2 Wait States
2 Wait States
© 2009 Microchip Technology Inc.
DS39632E-page 193