
2001 Microchip Technology Inc.
DS30292C-page 167
PIC16F87X
FIGURE 15-12:
PARALLEL SLAVE PORT TIMING (PIC16F874/877 ONLY)
TABLE 15-6:
PARALLEL SLAVE PORT REQUIREMENTS (PIC16F874/877 ONLY)
RE2/CS
RE0/RD
RE1/WR
RD7:RD0
62
63
64
65
Parameter
No.
Symbol
Characteristic
Min Typ
Max Units
Conditions
62
TdtV2wrH Data in valid before WR
↑ or CS↑ (setup time)
20
25
—
ns
Extended
Range Only
63*
TwrH2dtI
WR
↑ or CS↑ to data–in invalid (hold time) Standard(F)20
——
ns
Extended(LF)35
——
ns
64
TrdL2dtV
RD
↓ and CS↓ to data–out valid
—
80
90
ns
Extended
Range Only
65
TrdH2dtI
RD
↑ or CS↓ to data–out invalid
10
—
30
ns
*
These parameters are characterized but not tested.
Data in "Typ" column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are
not tested.