LFXP2-5E-5FTN256I Lattice, LFXP2-5E-5FTN256I Datasheet - Page 305

• Manufacturer Part Number: LFXP2-5E-5FTN256I
• Description: FPGA - Field Programmable Gate Array 5K LUTs 172 I/O Inst on DSP 1.2V -5 Spd
• Manufacturer: Lattice

Specifications of LFXP2-5E-5FTN256I

• Number Of Macrocells: 5000
• Number Of Programmable I/os: 172
• Data Ram Size: 169984
• Supply Voltage (max): 1.26 V
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Supply Voltage (min): 1.14 V
• Package / Case: FTBGA-256
• Number Of Logic Elements/cells: *
• Number Of Labs/clbs: *
• Total Ram Bits: 169984
• Number Of I /o: 172
• Number Of Gates: -
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: *
• Operating Temperature: -40°C ~ 100°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lattice Semiconductor
Security Bit for the Configuration and User Flash (CONFIG_SECURE)
The CONFIG_SECURE setting is located in the GUI setting (Figure 15-3) mentioned in the previous section. After
security for the device is selected, NO readback operation is supported through the sysCONFIG port or ispJTAG™
port of the general contents. This is considered the lowest level of security.
Advanced Security Settings
Selecting Advanced Security Settings will enable more security features. One-Time Programmable (OTP), Flash
Protect and Encryption as shown in Figure 15-3. These settings are mutually exclusive. Selecting one or the other
may nullify other fields that are not required for each particular security settings.
One-Time Programmable (OTP) or Permanent Lock
One-Time Programmable (OTP) or permanent lock is another feature that provides the highest level of security.
This form of security is currently available only for LatticeXP2 devices. If OTP fuses are programmed it permanently
prevents write access to the devices contents. Users must be aware before using this feature that once the OTP is
programmed it is not possible to erase or reprogram the device or its security settings. As the name implies, it is
a one-time event only. Table 15-1 specifies the behavior of the chip when security bit and the OTP bit are pro-
grammed.
Table 15-1. Security and OTP Bit Settings
CONFIG_SECURE
8. Programming the Key Lock secures the 128-bit encryption key. When satisfied, type Yes to confirm, and
9. From the main ispVM window (Figure 15-5) click on the green GO button on the toolbar to program the
Security
Note: Be sure to remember this key. Once the Key Lock is programmed, Lattice Semiconductor cannot
read back the128-bit encryption key.
then click Apply. Once the Key Lock is programmed and the device is power cycled, the 128-bit encryption
key cannot be read out of the device.
128-bit encryption key into the LatticeXP2. When complete, the LatticeXP2 will only configure from a
JEDEC file encrypted with a key that exactly matches the one just programmed.
0
0
1
1
a. The 128-bit encryption key can be saved to a file using the Save to File button. The 128-bit encryp-
tion key will be encrypted using an 8-character file password that the user selects. The name of the
file will be <Project_Name>.bek. In the future, instead of entering the 128-bit key, simply click on
Load from File and provide the file password.
OTP Bit
0
1
0
1
Do nothing
Inhibit Erase or Programming
Inhibit Readback
Inhibit Erase, Programming or Readback
Action
15-6
Encryption and Security Usage Guide
Re-Program
Yes
Yes
No
No
LatticeXP2 Configuration
Read Back
Yes
Yes
No
No
Erase
Yes
Yes
No
No