AX500-1BG896 ACTEL [Actel Corporation], AX500-1BG896 Datasheet - Page 41

• Manufacturer Part Number: AX500-1BG896
• Description: Axcelerator Family FPGAs
• Manufacturer: ACTEL [Actel Corporation]

2.5V LVCMOS
Low-Voltage Complementary Metal-Oxide Semiconductor for 2.5V is an extension of the LVCMOS standard (JESD8-5)
used for general-purpose 2.5V applications. It uses a 3.3V tolerant CMOS input buffer and a push-pull output buffer.
Table 2-22 • DC Input and Output Levels
AC Loadings
Figure 2-16 • AC Test Loads
Table 2-23 • AC Waveforms, Measuring Points, and Capacitive Loads
Timing Characteristics
Table 2-24 • 2.5V LVCMOS I/O Module
* Measuring Point = V
Parameter
LVCMOS25 I/O Module Timing
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
DP
PY
ICLKQ
OCLKQ
SUD
SUE
HD
HE
CPWHL
CPWLH
WASYN
REASYN
HASYN
CLR
PRESET
Min,V
-0.3
Input Low (V)
0
V
Worst-Case Commercial Conditions V
IL
Input Buffer
Output Buffer
Clock-to-Q for the I/O input register
Clock-to-Q for the IO output register and the I/O
enable register
Data Input Set-Up
Enable Input Set-Up
Data Input Hold
Enable Input Hold
Clock Pulse Width High to Low
Clock Pulse Width Low to High
Asynchronous Pulse Width
Asynchronous Recovery Time
Asynchronous Removal Time
Asynchronous Clear-to-Q
Asynchronous Preset-to-Q
Max,V
0.7
trip
Test Point
for t
pd
Input High (V)
Min,V
Description
1.7
2.5
35 pF
V
IH
Max,V
CCA
Measuring Point* (V)
3.6
= 1.425V, V
Test Point
1.25
for tristate
v2.7
CCI
Min.
Max,V
0.43
0.45
0.43
'–2' Speed
V
0.4
= 2.3V, T
R=1k
OL
Max.
1.99
3.24
0.67
0.67
0.23
0.26
0.00
0.00
0.10
0.00
0.23
0.23
J
R to V
R to GND for t
35 pF for t
5 pF for t
= 70°C
V
REF
Min.
0.48
0.51
0.48
'–1' Speed
CCI
Min,V
(typ) (V)
N/A
V
2.0
for t
phz
OH
pzh
/t
Max.
plz
/t
plz
2.26
3.69
0.77
0.77
0.27
0.30
0.00
0.00
0.10
0.00
0.27
0.27
phz
pzl
/t
pzl
/t
pzh
Axcelerator Family FPGAs
Min.
0.57
0.60
0.57
'Std' Speed
mA
I
12
OL
C
Max.
load
2.66
4.34
0.90
0.90
0.31
0.35
0.00
0.00
0.10
0.00
0.31
0.31
35
(pF)
mA
I
-12
OH
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
2-27