LFEC10E-3F256C Lattice Semiconductor Corp., LFEC10E-3F256C Datasheet - Page 231

• Manufacturer Part Number: LFEC10E-3F256C
• Description: Latticeecp/ec Family of Fpga Devices Has Been Optimized to Deliver Mainstream Fpga Features at Low Cost.for Maximum Performance And Value, The Latticeecp (EConomy Plus) Fpga Concept Combines an Efficient Fpgafabric With High-speed Dedicated Functions
• Manufacturer: Lattice Semiconductor Corp.

Lattice Semiconductor
Wake-up Clock Selection
The wake-up sequence is synchronized to a clock source. The user selects the clock source to wake up to. The
clock sources are either External (CCLK or TCK depending on if using sysCONFIG or ispJTAG) or User Clock. The
Default shall be EXTERNAL, implying TCK or CCLK depending on the programming/configuration method in use.
The User Clock is chosen at the time of design. The user can use any of the CLK pins of the device or a net (rout-
ing node) or the internal clock source as the User Clock source. The WAKEUP_CLK preference defaults to
EXTERNAL.
Bit Stream Compression
The LatticeECP/EC devices support bit stream compression. When the Compression preference is set to ON, the
Lattice design software will generate a compressed version of the bit stream file internally along with an uncom-
pressed bit stream file. The LatticeECP/EC devices will route the compressed bit stream through the decompres-
sion engine when the COMPRESS_CONFIG preference is set to ON. The COMPRESS_CONFIG preference
defaults to OFF. It is possible for the compressed bit stream to be larger than the uncompressed bit stream.
Table 13-7. LatticeECP/EC Configuration Memory Requirements
SPI3 Compatible SPI Flash Vendors
Technical Support Assistance
Hotline: 1-800-LATTICE (North America)
e-mail:
Internet: www.latticesemi.com
• STMicroelecctronics – M25P Serial FLASH Family
• NexFLASH – NX25P spiFLASH Family
[phone] (Outside North America)
[e-mail]
LatticeECP/EC
Family
Device
1.5
10
15
20
40
3
6
Max. Config.
Bits (M)
0.6
1.1
1.8
3.1
4.3
5.3
9.7
13-17
Lattice ECP/EC sysCONFIG Usage Guide
Required Boot Memory (M)
w/o Comp
16
1
2
2
4
8
8
with Comp
512K
1
2
4
4
4
8