TC39x BC/BD-Step
Electrical SpecificationPower Supply Infrastructure and Supply Start-up
3.13.1
Supply Ramp-up and Ramp-down Behavior
Start-up slew rates for supply rails shall comply to SR (see Table 3-33 Supply Ramp).
3.13.1.1 Single Supply mode (a)
VEXT (externally supplied)
0
1
2
3
4
5
5.5 V
5.0 V
4.5 V
LVD Reset release
HWCFG[1,2] latch
VRST5
Primary cold PORST Reset Threshold
LVD Reset Threshold
VLVDRST5
VDDPPA
0 V
HWCFG[6] latch
PORST output deasserted when VDD,
VDDP3 and VEXT voltage above
respective primary reset thresholds
PORST (output driven by PMS)
PORST (input driven by external regulator)
PORST input deasserted by external
regulator when all input voltages have
reached their minimum operational level
VDD
(internally generated
by EVRC)
1.375 V
1.25 V
VRSTC
Primary Reset Threshold
EVRC_tSTR
0 V
VDDP3
(internally generated
by EVR33)
3.63 V
3.30 V
VRST33
Primary Reset Threshold
tEVRstartup
(incl. tSTR)
EVR33 is started with a delay after
VLVDRST5 level is reached at VEXT &
VLVDRSTC level is reached at VDDPD
EVR33_tSTR
0 V
tBP (incl. tEVRstartup)
T3
T0
T1
T2
T4
User Code Execution
fCPU0=100MHz default
on firmware exit
T5
EVRC & EVR33 Ramp-up
Phase
Basic Supply & Clock
Infrastructure
Firmware Execution
Power Ramp-down phase
Startup_Diag_2 v 0.3
Figure 3-3 Single Supply mode (a) - VEXT (5 V) single supply
Data Sheet
454
V 1.2, 2021-03
OPEN MARKET VERSION