PIC16F87X Datasheet, PDF (169/218 Pages) Microchip Technology – 28/40-pin 8-Bit CMOS FLASH Microcontrollers

PIC16F87X
FIGURE 15-12: PARALLEL SLAVE PORT TIMING (PIC16F874/877 ONLY)
RE2/CS
RE0/RD
RE1/WR
65
RD7:RD0
64
Note: Refer to Figure 15-5 for load conditions.
62
63
TABLE 15-6: PARALLEL SLAVE PORT REQUIREMENTS (PIC16F874/877 ONLY)
Parameter
No.
Symbol
Characteristic
Min Typ† Max Units Conditions
62
TdtV2wrH Data in valid before WR↑ or CS↑ (setup time)
20 — — ns
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 ns
— — 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.
 2001 Microchip Technology Inc.
DS30292C-page 167