mc33912 Freescale Semiconductor, Inc, mc33912 Datasheet - Page 26

• Manufacturer Part Number: mc33912
• Description: Lin System Basis Chip With Dc Motor Pre-driver And Current Sense
• Manufacturer: Freescale Semiconductor, Inc

26
33912
FUNCTIONAL DEVICE OPERATIONS
OPERATIONAL MODES
Legend
WD: Watchdog
WD Disabled: Watchdog disabled (WDCONF pin connected to GND)
WD Trigger: Watchdog is triggered by SPI command
WD Failed: No watchdog trigger or trigger occurs in closed window
Stop Command: Stop command sent via SPI
Sleep Command: Sleep command sent via SPI
Wake-Up from Stop Mode: L1, L2, L3 or L4 state change, LIN bus wake-up, Periodic wake-up, CS rising edge wake-up or RST wake-up.
Wake-Up from Sleep Mode: L1, L2, L3 or L4 state change, LIN bus wake-up, Periodic wake-up.
Power
Down
Notes:
WD - means Watchdog
WD disabled - means Watchdog disabled (WDCONF terminal connected to GND)
WD trigger – means Watchdog is triggered by SPI command
WD failed – means no Watchdog trigger or trigger occurs in closed window
STOP Command - means STOP command sent via SPI
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
Power Up
Figure 15. Operating Modes and Transitions
Reset
Wake-Up (Reset)
Wake-Up (Reset)
V
V
DD
DD
Normal Request Time-out Expired (t
Low (>NR
LOW (>t
and VSUV = 0
and VSUV = 0
TOUT
Normal Request timeout expired (NR
V
NRTOUT
Reset Delay (t
DD
) expired
High and Reset Delay (t
V
V
) Expired
WD Failed
DD
DD
V
V
WD failed
DD
V
V
Sleep
DD
V
High and
DD
DD
Low
Low
DD
Low
Low
Low
Low
RST
) Expired
RST
Sleep Command
) expired
SLEEP Command
NRTOUT
TOUT
)
Analog Integrated Circuit Device Data
)
Request
Normal
Normal
Stop
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