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ZHCSH19G November 2017 – December 2024 TCAN1043-Q1 , TCAN1043G-Q1 , TCAN1043H-Q1 , TCAN1043HG-Q1

PRODUCTION DATA

封裝選項

請參考 PDF 數(shù)據(jù)表獲取器件具體的封裝圖。

機(jī)械數(shù)據(jù) (封裝 | 引腳)

D|14
DMT|14

散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)

訂購信息

8.3.1 Internal and External Indicator Flags (nFAULT and RXD)

The following device status indicator flags are implemented to allow for the MCU to determine the status of the device and the system. In addition to faults, the nFAULT terminal also signals wake up requests and a cold power-up sequence on the V_SUP battery terminal so the system can do any diagnostics or cold booting sequence necessary. The RXD terminal indicates wake up request and the faults are multiplexed (ORed) to the nFAULT output.

Table 8-1 Device Status Indicator Flags

EVENT	FLAG NAME	CAUSE	INDICATORS⁽¹⁾	FLAG IS CLEARED	COMMENT
Power-up	PWRON	Power up on VSUP and any return of VSUP after it has been below UV_VSUP	nFAULT = L upon entering Silent mode from Standby, Go-to-Sleep, or Sleep mode	After transition to normal mode
Wake-up Request	WAKERQ⁽²⁾	Wake up event on CAN bus, state transition on WAKE pin, or initial power up	nFAULT = RXD = L after wake up in standby mode, go-to-sleep mode, and sleep mode	After transition to normal mode, or either a UV_VCC or UV_VIO event	Wake up request can only be set from standby, Go-to-sleep, or sleep mode. Resets timers for UV_VCC or UV_VIO
Wake-up Source Recognition⁽³⁾	WAKESR	Wake up event on CAN bus, state transition on WAKE pin, initial power up	Available upon entering normal mode⁽⁴⁾ , nFAULT = L indicates wake from WAKE terminal, nFAULT = H indicates wake from CAN bus	After four recessive to dominant edges on TXD in normal mode,leaving normal mode, or either a UV_VCC or UV_VIO event	A LWU source flag is set on initial power up
Under voltage	UVVCC	Under voltage V_CC	Not externally indicated	VC_C returns, or Wake-up request occurs
	UVVIO	Under voltage V_IO	Not externally indicated	V_IO returns, or Wake-up request occurs
	UVVSUP	Under voltage V_SUP	Not externally indicated	V_SUP returns	V_SUP undervoltage event triggers the PWRON and WAKERQ flags upon return of VSUP
CAN Bus Failures	CBF	CANH shorted to GND, V_CC, V_SUP or CANL shorted to GND, V_CC, V_SUP	nFAULT = L in Normal mode only⁽⁵⁾	Upon leaving Normal mode, or if no CAN bus fault is detected for four consecutive dominant to recessive transitions of the TXD pin while in normal mode.	Failure must persist for four consecutive dominant to recessive transitions
Local Faults	TXDDTO	TXD Dominant Time Out, dominant (low) signal for t ≥ t_{TXD_DTO}	nFAULT = L upon entering Silent mode from Normal mode	RXD = L and TXD = H, or upon transitioning into Normal, Standby, Go-to-Sleep, or Sleep modes	CAN driver remains disabled until the TXDDTO is cleared
	TXDRXD	TXD and RXD pins are shorted together for t ≥ t_{TXD_DTO}			CAN driver remains disabled until the TXDRXD is cleared
	CANDOM	CAN bus dominant fault, when dominant bus signal received for t ≥ t_{BUS_DOM}		RXD = H, or upon transitioning into Normal, Standby, Go-to-Sleep, or Sleep modes	Driver remains enabled
	TSD	Thermal Shutdown, junction temperature ≥ T_TSD		T_J drops below t_TSD and either RXD = L and TXD = H, or upon transitioning into Normal, Standby, Go-to-Sleep, or Sleep modes	CAN driver remains disabled until the TSD is cleared

(1) V_IO and V_SUP are present.

(2) Transitions to Go-to-sleep mode is blocked until WAKERQ flag is cleared.

(3) Wake-up source recognition reflects the first wake up source. If additional wake-up. events occur the source still indicates the original wake up source.

(4) Indicator is only available in normal mode until the flag is cleared.

(5) CAN Bus failure flag is indicated after four recessive-to-dominant edges on TXD.