LC4256C-75FTN256AI Lattice, LC4256C-75FTN256AI Datasheet - Page 26
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LC4256C-75FTN256AI
Manufacturer Part Number
LC4256C-75FTN256AI
Description
CPLD - Complex Programmable Logic Devices 256MC 128I/O ispJTAG 1.8V 7.5ns IND
Manufacturer
Lattice
Datasheet
1.LC4256C-75FTN256AI.pdf
(99 pages)
Specifications of LC4256C-75FTN256AI
Rohs
yes
Memory Type
EEPROM
Number Of Macrocells
256
Maximum Operating Frequency
178.57 MHz
Delay Time
7.5 ns
Number Of Programmable I/os
160
Operating Supply Voltage
1.8 V
Maximum Operating Temperature
+ 105 C
Minimum Operating Temperature
- 40 C
Package / Case
FTBGA
Mounting Style
SMD/SMT
Number Of Product Terms Per Macro
80
Factory Pack Quantity
450
Supply Current
2.5 mA
Supply Voltage - Max
1.95 V
Supply Voltage - Min
1.65 V
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LC4256C-75FTN256AI
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
Lattice Semiconductor
Timing Model
The task of determining the timing through the ispMACH 4000 family, like any CPLD, is relatively simple. The timing
model provided in Figure 11 shows the specific delay paths. Once the implementation of a given function is deter-
mined either conceptually or from the software report file, the delay path of the function can easily be determined
from the timing model. The Lattice design tools report the timing delays based on the same timing model for a par-
ticular design. Note that the internal timing parameters are given for reference only, and are not tested. The exter-
nal timing parameters are tested and guaranteed for every device. For more information on the timing model and
usage, refer to TN1004,
Figure 11. ispMACH 4000 Timing Model
SCLK
OE
Feedback
IN
From
t
Delays
t
GCLK_IN
In/Out
GOE
t
t
t
IOI
IOI
IN
t
IOI
ispMACH 4000 Timing Model Design and Usage
t
t
INREG
INDIO
Control
t
Delays
ROUTE
t
BLA
t
t
PTCLK
t
t
PTSR
t
BCLK
BSR
MCELL
t
EXP
t
GPTOE
t
PTOE
26
ispMACH 4000V/B/C/Z Family Data Sheet
Routing/GLB Delays
DATA
C.E.
S/R
t
t
PDb
MC Reg.
PDi
Q
Note: Italicized items are optional delay adders.
Register/Latch
Guidelines.
Delays
t
ORP
Delays
In/Out
t
t
t
t
t
FBK
BUF
IOO
DIS
EN
Feedback
Out