908E624 Datasheet, PDF (21/40 Pages) Freescale Semiconductor, Inc – Integrated Triple High-Side Switch with Embedded MCU and LIN Serial Communication for Relay Drivers

FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
908E624 ANALOG DIE MODES OF OPERATION
The 908E624 offers three operating modes: Normal (Run),
Stop, and Sleep. In Normal mode the device is active and is
operating under normal application conditions. The Stop and
Sleep modes are low-power modes with wake-up
capabilities.
In Stop mode the voltage regulator still supplies the MCU
with V_DD (limited current capability) and in Sleep mode the
voltage regulator is turned off (V_DD = 0 V).
Wake-up from Stop mode is initiated by a wake-up
interrupt. Wakeup from Sleep mode is done by a reset and
the voltage regulator is turned back on.
The selection of the different modes is controlled by the
MODE1:2 bits in the SPI Control register.
Figure 11 describes how transitions are done between the
different operating modes and Table 6, page 22, gives an
overview of the operating mode.
Power
Down
Power Up
Normal R_Noe_rq_mu_ae_{l R}s_et_qT_ueim_ste_timou_eot_uE_{t e}x_xp_pi_ir_re_edd_(N(t_{RNTROUTTO) UT})
V_{VDDDD L}L_oo_ww
Reset
V_DD High and
VDRDeHsigeht aDndelRaeyse(ttD_Re_Sla_Ty) (EtRxSTp) ierxepdired
Normal
Request
V_{VDDDD L}L_owow
WDWDFfaaiilleedd
Normal
V_VDDDDLL_owO₍W_>NR(>_TOt_{UNT)ReTxOpiUreTd}) Expired
and _aVS_nU_dV_L=_V0_{F = 0}
Sle_Se_Lp_EEC_Po_Cm_omm_ma_an_nd_d
WaWkaeke-U-Upp ((RReeseste) t)
Sleep
V_DVDDD L_Loo_ww
Legend
WD: Watchdog
WD Disable^Nd^o:^teW^sa^: tchdog disabled (WDCONF terminal connected to GND)
WD Trigger^W: W^D a^-tc^mh^ed^aoⁿg^sis^Wt^ari^tg^cg^he^dr^oe^gd by SPI command
WD Failed:^WN^Do ^dw^isa^atc^bh^led^dog^- t^mrig^eg^aeⁿr^so^Wr ^atr^ti^cg^hg^de^or^go^dcc^isu^ar^bs^lein^d c^(Wlos^De^Cd^Ow^Nin^Fd^to^ew^{rminal connected to GND)}
Stop Comm^Wa^Dnd^t:^riS^ggto^ep^{r –}co^mm^em^ana^snd^Ws^ae^tcn^ht^dv^oia^g S^isP^tI^{riggered by SPI command}
Sleep Com^Wm^Dan^fd^a:^ileS^dle^–ep^mc^eo^am^nsmⁿa^on^Wd s^ae^tcn^ht^dv^oia^g S^triP^gI^{ger or trigger occurs in closed window}
Wake-Up: L^S1^TOor^PL^C2^os^mta^mte^acⁿh^dan^- g^me^eo^ar^nsLI^SN^Tb^Ou^Ps ^cw^oa^mk^me-^auⁿp^do^sr^eSⁿS^{t v}rⁱi^asi^Sng^PIedge
SLEEP Command - means SLEEP command send via SPI
Wake-Up - means L1 or L2 state change or LIN bus wake up or SS rising edge
Figure 11. Operating Modes and Transitions
Stop
Analog Integrated Circuit Device Data
Freescale Semiconductor
908E624
21