EP2S180F1020C4 Datasheet, PDF (635/768 Pages) Altera Corporation – Stratix II Device Handbook, Volume 1

Configuring Stratix II and Stratix II GX Devices
Table 7–18. PPA Timing Parameters for Stratix II and Stratix II GX Devices (Part 2 of 2)
Symbol
Parameter
Min
t_CFG
nCONFIG low pulse width
2
t_STATUS nSTATUS low pulse width
10
t_CF2ST1 nCONFIG high to nSTATUS high
t_CSSU
Chip select setup time before rising edge
10
on nWS
t_CSH
Chip select hold time after rising edge on
0
nWS
t_CF2WS nCONFIG high to first rising edge on nWS
100
t_ST2WS nSTATUS high to first rising edge on nWS
2
t_DSU
Data setup time before rising edge on nWS
10
t_DH
Data hold time after rising edge on nWS
0
t_WSP
nWS low pulse width
15
t_WS2B
nWS rising edge to RDYnBSY low
t_BUSY
RDYnBSY low pulse width
7
t_RDY2WS RDYnBSY rising edge to nWS rising edge
15
t_WS2RS nWS rising edge to nRS falling edge
15
t_RS2WS nRS rising edge to nWS rising edge
15
t_RSD7
nRS falling edge to DATA7 valid with
RDYnBSY signal
t_R
Input rise time
t_F
Input fall time
t_CD2UM CONF_DONE high to user mode (2)
t_{C D2 CU} CONF_DONE high to CLKUSR enabled
t_{C D 2 U M C} CONF_DONE high to user mode with
CLKUSR option on
20
40
t_{C D 2 C U} + (299 
CLKUSR period)
Max
100 (1)
100 (1)
20
45
20
40
40
100
Units
µs
µs
µs
ns
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
Notes to Table 7–18:
(1) This value is obtainable if users do not delay configuration by extending the nCONFIG or nSTATUS low pulse
width.
(2) The minimum and maximum numbers apply only if the internal oscillator is chosen as the clock source for starting
up the device.
f
Device configuration options and how to create configuration files are
discussed further in the Software Settings chapter in volume 2 the
Configuration Handbook.
Altera Corporation
January 2008
7–83
Stratix II Device Handbook, Volume 2