LC4256V-75TN176C Lattice, LC4256V-75TN176C Datasheet - Page 6

no-image

LC4256V-75TN176C

Manufacturer Part Number
LC4256V-75TN176C
Description
CPLD - Complex Programmable Logic Devices 400MHZ 256 Macrocell 3.3 V 7.5 tPD
Manufacturer
Lattice
Datasheet

Specifications of LC4256V-75TN176C

Memory Type
EEPROM
Number Of Macrocells
256
Number Of Product Terms Per Macro
80
Maximum Operating Frequency
322 MHz
Delay Time
3 ns
Number Of Programmable I/os
44
Operating Supply Voltage
3.3 V
Supply Current
12.5 mA
Maximum Operating Temperature
+ 90 C
Minimum Operating Temperature
0 C
Package / Case
TQFP-176
Mounting Style
SMD/SMT
Supply Voltage (max)
3.6 V
Supply Voltage (min)
3 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LC4256V-75TN176C
Manufacturer:
SIMCOM
Quantity:
1 000
Part Number:
LC4256V-75TN176C
Manufacturer:
Lattice
Quantity:
218
Part Number:
LC4256V-75TN176C
Manufacturer:
LATTICE22
Quantity:
207
Part Number:
LC4256V-75TN176C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
Part Number:
LC4256V-75TN176C
Manufacturer:
Lattice
Quantity:
1 000
Part Number:
LC4256V-75TN176C
Manufacturer:
LATTICE
Quantity:
20 000
Part Number:
LC4256V-75TN176C
Manufacturer:
LATTICE
Quantity:
15 572
Lattice Semiconductor
Product Term Allocator
The product term allocator assigns product terms from a cluster to either logic or control applications as required
by the design being implemented. Product terms that are used as logic are steered into a 5-input OR gate associ-
ated with the cluster. Product terms that used for control are steered either to the macrocell or I/O cell associated
with the cluster. Table 3 shows the available functions for each of the five product terms in the cluster. The OR gate
output connects to the associated I/O cell, providing a fast path for narrow combinatorial functions, and to the logic
allocator.
Table 3. Individual PT Steering
Cluster Allocator
The cluster allocator allows clusters to be steered to neighboring macrocells, thus allowing the creation of functions
with more product terms. Table 4 shows which clusters can be steered to which macrocells. Used in this manner,
the cluster allocator can be used to form functions of up to 20 product terms. Additionally, the cluster allocator
accepts inputs from the wide steering logic. Using these inputs, functions up to 80 product terms can be created.
Table 4. Available Clusters for Each Macrocell
Wide Steering Logic
The wide steering logic allows the output of the cluster allocator n to be connected to the input of the cluster alloca-
tor n +4. Thus, cluster chains can be formed with up to 80 product terms, supporting wide product term functions
and allowing performance to be increased through a single GLB implementation. Table 5 shows the product term
chains.
Product Term
Macrocell
PT
PT
PT
PT
PT
M10
M11
M12
M13
M14
M15
n
n
n
n
M0
M1
M2
M3
M4
M5
M6
M7
M8
M9
n
+1
+2
+3
+4
Logic PT
Logic PT
Logic PT
Logic PT
Logic PT
Logic
C10
C11
C12
C13
C14
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
Single PT for XOR/OR
Individual Clock (PT Clock)
Individual Initialization or Individual Clock Enable (PT Initialization/CE)
Individual Initialization (PT Initialization)
Individual OE (PTOE)
6
C10
C11
C12
C13
C14
C15
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
ispMACH 4000V/B/C/Z Family Data Sheet
Available Clusters
Control
C10
C11
C12
C13
C14
C15
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C2
C3
C4
C5
C6
C7
C8
C9

Related parts for LC4256V-75TN176C