TC290 Datasheet, PDF (383/476 Pages) Infineon Technologies AG – 32-Bit Single-Chip Micocontroller

TC290 / TC297 / TC298 / TC299 BB-Step
Electrical SpecificationReset Timing
4) The regulator that supplies V_EXT should ensure that V_EXT is in the operational region before PORST is externally released
by the regulator. Incase of 5V nominal supply, it should be ensured that V_EXT > 4V before PORST is released. Incase of
3.3V nominal supply , it should be ensured that V_EXT > 3V before PORST is released. The additional minimum PORST hold
time is required as an additional mechanism to avoid consecutive PORST toggling owing to slow supply slopes or residual
supply ramp-ups. It is also required to activate external PORST atleast 100us before power-fail is recognised to avoid
consecutive PORST toggling on a power fail event.
5) This parameter includes the delay of the analog spike filter in the PORST pad.
VDDP
VD DPPA
V_{DD PPA}
VDD
PORST
t_POA
t_POA
Cold
Warm
V D D PR
ESR0
Pads
Pad-
state
undefined
Tristate Z / pullup H
tPI
tP IP
Programmed
Z/ H
t PI
Programmed Z / H
TRST
TESTMODE
t P OS
t POH
t POS
tP OH
Programmed
Pad-
state
undefined
HWCFG
t HDH
power -on config
Figure 3-8 Power, Pad and Reset Timing
t HDA
t HDH
config
t HDA
t HDH
config
res et_beh_auri x
Data Sheet
3-377
V 1.1 2015-05
TC290/TC297/TC298/TC299 BB-Step Data Sheet downloaded by saravanakumar maniyam (larsen and Toubro limited) at 08 Sep 2015 08:06