PIC18F258 Datasheet, PDF (344/384 Pages) Microchip Technology – High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN

PIC18FXX8
FIGURE 27-11:
RE2/CS
PARALLEL SLAVE PORT TIMING (PIC18F248 AND PIC18F458)
RE0/RD
RE1/WR
65
RD7:RD0
64
Note: Refer to Figure 27-4 for load conditions.
62
63
TABLE 27-12: PARALLEL SLAVE PORT REQUIREMENTS (PIC18F248 AND PIC18F458)
Param
No.
Symbol
Characteristic
62
TdtV2wrH Data-in valid before WR↑ or CS↑
(setup time)
63
TwrH2dtI WR↑ or CS↑ to data-in invalid PIC18FXX8
(hold time)
PIC18LFXX8
64
TrdL2dtV RD↓ and CS↓ to data-out valid
65
TrdH2dtI RD↑ or CS↓ to data-out invalid
66
TibfINH Inhibit the IBF flag bit being cleared from
WR↑ or CS↑
Min Max Units
Conditions
20 — ns
25 — ns Extended Temp. range
20 — ns
35 — ns
— 80 ns
— 90 ns Extended Temp. range
10 30 ns
— 3 TCY ns
DS41159B-page 342
Preliminary
 2002 Microchip Technology Inc.