PC87307VUL National Semiconductor, PC87307VUL Datasheet - Page 212
PC87307VUL
Manufacturer Part Number
PC87307VUL
Description
PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
Manufacturer
National Semiconductor
Datasheet
1.PC87307VUL.pdf
(218 pages)
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13.3.23 Chip Select Timing
ONCTL
RING
A15-1, AEN
t
t
t
WR, RD
RPO
RTO
RINW
Symbol
CS1,0
t
t
a. Not tested. Guaranteed by design.
CE
CD
Symbol
V
V
HI-Z
V
OH
OL
OL
Delay from RING Pulse to ONCTL
Delay from RING Pulse Train to ONCTL
RING Width (High and Low Time), Single Pulse Mode
RING Width (High and Low Time), Pulse Train Mode
Delay from Command to Enable Chip Select
Delay from Command to Disable Chip Select
FIGURE 13-33. RING Trigger and ONCTL Timing
TABLE 13-61. RING Trigger and ONCTL Timing
t
RINW
FIGURE 13-34. Chip Select Timing
t
TABLE 13-62. Chip Select Timing
CE
Parameter
Parameter
Device Description
t
RINW
212
a
t
..
RTO
Min
0
0
0.125
Min
10
50
t
RPO
Max
25
25
0.190
t
Max
CD
25
nsec
nsec
Unit
nsec
nsec
Unit
sec
sec
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