PC87307VUL National Semiconductor, PC87307VUL Datasheet - Page 206

• Manufacturer Part Number: PC87307VUL
• Description: PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
• Manufacturer: National Semiconductor

www.national.com
13.3.16 Parallel Port Timing
t
t
t
t
t
t
t
t
ACK
IRQ
RD STR
WR CTR4 = 0
Symbol
PDH
PDS
PILa
PILia
PIHa
PIHia
PIz
SW
BUSY
ACK
PD7-0
STB
Port Data Hold
Port Data Setup
Port Active Low Interrupt, Active
Port Active Low Interrupt, Inactive
Port Active High Interrupt, Active
Port Active High Interrupt, Inactive
Port Active High Interrupt, TRI-STATE
Strobe Width
Parameter
FIGURE 13-21. Parallel Port Interrupt Timing (Compatible Mode)
ACK
IRQ
FIGURE 13-22. Parallel Port Interrupt Timing (Extended Mode)
t
PIHa
FIGURE 13-23. Typical Parallel Port Data Exchange
TABLE 13-52. Standard Parallel Port Timing
t
PDS
These times are system dependent and are
therefore not tested.
These times are system dependent and are
therefore not tested.
These times are system dependent and are
therefore not tested.
t
Device Description
PIHia
206
t
SW
t
PILa
Conditions
t
PDH
t
t
PIHa
PILia
Typical
500
500
500
Max
(TRI-STATE)
33
33
33
33
33
t
PIz
nsec
nsec
nsec
nsec
nsec
nsec
nsec
nsec
Unit