SAK-TC1197-256F180E INFINEON [Infineon Technologies AG], SAK-TC1197-256F180E Datasheet - Page 151

• Manufacturer Part Number: SAK-TC1197-256F180E
• Description: 32-Bit Single-Chip Microcontroller
• Manufacturer: INFINEON [Infineon Technologies AG]

5.3.3
Figure 24
The following list of rules applies to the power-up/down sequence:
•
•
•
Data Sheet
3.3V
1.5V
V
5V
All ground pins V
system. Regarding the DC current component, all ground pins are internally directly
connected.
At any moment,
each power supply must be higher than any lower_power_supply - 0.5 V, or:
VDD5 > VDD3.3 - 0.5 V; VDD5 > VDD1.5 - 0.5 V;VDD3.3 > VDD1.5 - 0.5 V, see
Figure
During power-up and power-down, the voltage difference between the power supply
pins of the same voltage (3.3 V, 1.5 V, and 5 V) with different names (for example
VDDP, VDDFL3 ...), that are internally connected via diodes, must be lower than
100 mV. On the other hand, all power supply pins with the same name (for example
V
DDP
24.
Power Sequencing
5 V / 3.3 V / 1.5 V Power-Up/Down Sequence
SS
must be externally connected to one single star point in the
0.5V
+-5%
0.5V
147
+-5%
PORST
+-5%
power
down
-12%
power
fail
Electrical Parameters
-12%
V
AREF
0.5V
V1.1, 2009-05
Power-Up 8.vsd
TC1197
t
t