SX Family FPGAs
v3.2
1-15
Power-Up Sequencing
Power-Down Sequencing
Table 1-10 Power-Up Sequencing
VCCA
VCCR
VCCI
Power-Up Sequence
Comments
A54SX08, A54SX16, A54SX32
3.3 V
5.0 V
3.3 V
5.0 V First
3.3 V Second
No possible damage to device
3.3 V First
5.0 V Second
Possible damage to device
A54SX16P
3.3 V
3.3 V Only
No possible damage to device
3.3 V
5.0 V
3.3 V
5.0 V First
3.3 V Second
No possible damage to device
3.3 V First
5.0 V Second
Possible damage to device
3.3 V
5.0 V
5.0 V First
3.3 V Second
No possible damage to device
3.3 V First
5.0 V Second
No possible damage to device
Note: No inputs should be driven (high or low) before completion of power-up.
Table 1-11 Power-Down Sequencing
VCCA
VCCR
VCCI
Power-Down Sequence
Comments
A54SX08, A54SX16, A54SX32
3.3 V
5.0 V
3.3 V
5.0 V First
3.3 V Second
Possible damage to device
3.3 V First
5.0 V Second
No possible damage to device
A54SX16P
3.3 V
3.3 V Only
No possible damage to device
3.3 V
5.0 V
3.3 V
5.0 V First
3.3 V Second
Possible damage to device
3.3 V First
5.0 V Second
No possible damage to device
3.3 V
5.0 V
5.0 V First
3.3 V Second
No possible damage to device
3.3 V First
5.0 V Second
No possible damage to device
Note: No inputs should be driven (high or low) after the beginning of the power-down sequence.