Specifications
ispLSI 1048
5
USEispLS 1048EAFORNEW
COMMERCAL&INDUSTRAL
DESGNS
18
23
–
–
–
–
12
–
–
14
–
17
–
20
20
–
–
–
–
–
–
71.4
41.7
83
9
–
12
–
–
–
–
6
6
2
6.5
15
20
–
–
–
–
–
–
12
–
17
–
18
18
–
–
–
–
1. Unless noted otherwise, all parameters use a GRP load of 4 GLBs, 20 PTXOR path, ORP and Y0 clock.
2. Refer to Timing Model in this data sheet for further details.
3. Standard 16-Bit loadable counter using GRP feedback.
4.
f
max (Toggle) may be less than 1/(
t
wh +
t
wl). This is to allow for a clock duty cycle of other than 50%.
5. Reference Switching Test Conditions section.
MIN. MAX.
–
–
31.3
71.4
12
–
0
16
–
0
–
13
–
–
7
7
2.7
8.7
Data Propagation Delay, 4PT bypass, ORP bypass
Data Propagation Delay, Worst Case Path
Clock Frequency with Internal Feedback
3
Clock Frequency with External Feedback
Clock Frequency, Max Toggle
GLB Reg. Setup Time before Clock, 4PT bypass
GLB Reg. Clock to Output Delay, ORP bypass
GLB Reg.
Hold Time after Clock, 4 PT bypass
GLB Reg. Setup Time before Clock
GLB Reg. Clock to Output Delay
GLB Reg. Hold Time after Clock
Ext. Reset Pin to Output Delay
Ext. Reset Pulse Duration
Input to Output Enable
Input to Output Disable
Ext. Sync. Clock Pulse Duration, High
Ext. Sync. Clock Pulse Duration, Low
I/O Reg. Setup Time before Ext. Sync. Clock (Y2, Y3)
I/O Reg. Hold Time after Ext. Sync. Clock (Y2, Y3)
ns
ns
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
pd1
t
pd2
f
max (Int.)
f
max (Ext.)
f
max (Tog.)
t
su1
t
co1
t
h1
t
su2
t
co2
t
h2
t
r1
t
rw1
t
en
t
dis
t
wh
t
wl
t
su5
t
h5
1
2
3
5
6
7
9
11
12
13
14
15
16
17
18
19
A
A
–
–
–
–
–
–
–
–
B
C
–
–
–
–
DESCRIPTION
1
PARAMETER
#
2
UNITS
TEST
5
COND.
1
tsu2 + tco1
( )
MIN.
24
30.7
–
–
–
–
16
–
–
18.7
–
22.7
–
26.7
26.7
–
–
–
–
-50
MIN. MAX.
–
–
80
50
100
7
–
–
–
–
–
5
5
2
6.5
-80
Table 2- 0030A-48/80,70,50
MAX.
-70
External Timing Parameters
Over Recommended Operating Conditions