X930A Datasheet, PDF (26/38 Pages) Intel Corporation – UNIVERSAL SERIAL BUS MICROCONTROLLER

8x930Ax UNIVERSAL SERIAL BUS (USB) MICROCONTROLLER
5.4.4 DEFINITION OF REAL-TIME WAIT SYMBOLS
Table 12. Real-time Wait Timing Symbol Definitions
Signals
Conditions
A Address
D Data
C WCLK
Y WAIT#
W WR#
R RD#/PSEN#
L Low
X Hold
V Setup
5.4.5 REAL-TIME WAIT FUNCTION AC CHARACTERISTICS
Symbol
Table 13. Real-time Wait AC Timing Specifications
Parameter
F_CLK Variable ^{(1) (2)}
Min
Typ
Max
Units
T_CLYV
Wait Clock Low to Wait Setup
0
0.5 T_CLK – 13
ns
T_CLYX
Wait Hold after Wait Clock Low
(W)T_CLK + 5
(0.5+W)T_CLK – 13
ns
T_RLYV
PSEN# or RD# Low to Wait Setup
0
0.5 T_CLK – 13
ns
T_RLYX
Wait Hold after PSEN# or RD# Low (W)T_CLK + 5
(0.5+W)T_CLK – 13
ns
T_WLYV
WR# Low to Wait Setup
0
0.5 T_CLK – 13
ns
T_WLYX
Wait Hold after WR# Low
(W)T_CLK + 5
(0.5+W)T_CLK – 13
ns
NOTES:
1. W = 0, 1, 2, ... is the number of real-time wait states.
2. Real-time Wait function has a critical timing for instruction read. It is not advisable to use this feature
for instruction read during page mode.
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ADVANCE INFORMATION