Cirrus Logic CS61584A - Manual (Page 11)

CS61584A
DS261PP5 11
DS261PP5
SWITCHING CHARACTERISTICS - PARALLEL PORT
(T
A
= -40 to 85 °C;
TV+, RV+ = nominal ± 0.3 V; Inputs: Logic 0 = 0 V, Logic 1 = RV+)
Parameter Symbol Min Max Unit
Cycle Time t
cyc
250 - ns
Pulse Width, DS Low or RD High PW
el
150 - ns
Pulse Width, DS High or RD Low PW
eh
150 - ns
Input Rise/Fall Times t
r
, t
f
- 30 ns
R/W Hold Time t
rwh
10 - ns
R/W Setup Time Before DS High t
rws
50 - ns
CS Setup Time Before DS, WR, or RD Active t
cs
50 - ns
CS Setup Time Before DS, WR, or RD Active for RAM/ROM t
csr
130 - ns
CS Hold Time t
ch
20 - ns
Read Data Hold Time t
dhr
10 80 ns
Write Data Hold Time t
dhw
5 - ns
Muxed Address Valid to AS or ALE Fall t
asl
15 - ns
Muxed Address Hold Time t
ahl
10 - ns
Delay Time DS, WR, or RD to AS or ALE Rise t
asd
25 - ns
Pulse Width AS or ALE High 40 - ns
Delay Time AS or ALE to DS, WR, or RD t
ased
40 - ns
Output Data Delay Time from DS or RD t
ddr
20 120 ns
Data Setup Time t
dsw
80 - ns
DTACK Delay t
dkd
5 - ns
DTACK Hold Time t
dkh
5 - ns
AS/ALE Min Low Interval for RAM/ROM t
aamir
50 - ns
CS61584A
DS261F1 11