27935 Parallax Inc, 27935 Datasheet - Page 22
![CARD SRAM HYDRA XTREME 512K](/photos/9/30/93088/mfg_27935_sml.jpg)
27935
Manufacturer Part Number
27935
Description
CARD SRAM HYDRA XTREME 512K
Manufacturer
Parallax Inc
Datasheet
1.27935.pdf
(94 pages)
Specifications of 27935
Accessory Type
Memory Extension Card
For Use With/related Products
HYDRA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Lattice Semiconductor
ispMACH 4000V/B/C External Switching Characteristics
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
f
f
1. Timing numbers are based on default LVCMOS 1.8 I/O buffers. Use timing adjusters provided to calculate other standards.
2. Measured using standard switching circuit, assuming GRP loading of 1 and 1 output switching.
3. Pulse widths and clock widths less than minimum will cause unknown behavior.
4. Standard 16-bit counter using GRP feedback.
Parameter
PD
PD_MC
S
ST
SIR
SIRZ
H
HT
HIR
HIRZ
CO
R
RW
PTOE/DIS
GPTOE/DIS
GOE/DIS
CW
GW
WIR
MAX
MAX
4
(Ext.)
5-PT bypass combinatorial propagation
delay
20-PT combinatorial propagation delay
through macrocell
GLB register setup time before clock
GLB register setup time before clock
with T-type register
GLB register setup time before clock,
input register path
GLB register setup time before clock
with zero hold
GLB register hold time after clock
GLB register hold time after clock with
T-type register
GLB register hold time after clock, input
register path
GLB register hold time after clock, input
register path with zero hold
GLB register clock-to-output delay
External reset pin to output delay
External reset pulse duration
Input to output local product term output
enable/disable
Input to output global product term
output enable/disable
Global OE input to output enable/disable
Global clock width, high or low
Global gate width low (for low
transparent) or high (for high transparent)
Input register clock width, high or low
Clock frequency with internal feedback
Clock frequency with external feedback,
[1/ (t
S
+ t
CO
)]
Description
1, 2, 3
Over Recommended Operating Conditions
Min.
400
250
1.8
2.0
0.7
1.7
0.0
0.0
0.9
0.0
1.5
1.1
1.1
1.1
—
—
—
—
—
—
—
-25
22
Max.
2.5
3.2
4.0
5.0
2.2
3.5
3.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
ispMACH 4000V/B/C/Z Family Data Sheet
Min.
333
222
1.8
2.0
1.0
2.0
0.0
0.0
1.0
0.0
1.5
1.3
1.3
1.3
—
—
—
—
—
—
—
-27
Max.
2.7
3.5
2.7
4.0
4.5
6.5
3.5
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Min.
322
212
2.0
2.2
1.0
2.0
0.0
0.0
1.0
0.0
1.5
1.3
1.3
1.3
—
—
—
—
—
—
—
-3
Max.
3.0
3.8
2.7
4.4
5.0
8.0
4.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Min.
322
212
2.0
2.2
1.0
2.0
0.0
0.0
1.0
0.0
1.5
1.3
1.3
1.3
—
—
—
—
—
—
—
-35
Max.
3.5
4.2
2.7
4.5
5.5
8.0
4.5
—
—
—
—
—
—
—
—
—
—
—
—
—
-
Timing v.3.2
Units
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns