參數(shù)資料
型號(hào)： 33742S
廠商： Motorola, Inc.
元件分類(lèi)： CAN
英文描述： System Basis Chip (SBC) with Enhanced High-Speed CAN Transceiver
中文描述： 系統(tǒng)基礎(chǔ)芯片的增強(qiáng)型（SBC）的高速CAN收發(fā)器
文件頁(yè)數(shù)： 37/52頁(yè)
文件大小： 1087K
代理商： 33742S
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
33742
37
DEVICE FAULT OPERATION
Table 7
describes the relationship between device fault or
warning and the operation of the V
DD
, V2, CAN, and HS
interface.
Table 7. Fault/Warning
Fault/Warning
V
DD
V2
CAN
HS
Battery Fail
Turn OFF
Turn OFF
Turn OFF due to V2.
No communication
OFF
V
DD
Temperature
Prewarning
Warning flag only.
Leave as is
No change
No change
No change
V
DD
Overtemperature
Turn OFF
Turn OFF
Turn OFF due to V2.
No communication
OFF
V
DD
Overcurrent
V
DD
regulator enters linear
mode. V
DD
undervoltage
reset may occurs. V
DD
overtemperature
prewarning or shutdown
may occur
Turn OFF if V
DD
undervoltage reset occurs
If V2 is OFF, turn OFF
and no communication
Turn OFF if V
DD
undervoltage reset occurs
V
DD
Short Circuit
V
DD
undervoltage reset
occurs. V
DD
overtemperature
prewarning or shutdown
may occur
Turn OFF
Turn OFF due to V2.
No communication
OFF
Watchdog Reset
ON
Turn OFF
Turn OFF due to V2.
No communication
OFF
V2LOW (e.g., V2 < 4.0 V)
No change
V2 out of range
Turn OFF due to V2 low
No change
HS Overtemperature
No change
No change
No change
OFF
HS Overcurrent
No change
No change
No change
HS overtemperature
may occur
V
SUP
LOW
No change
No change
No change
No change
CAN Overtemperature
No change
No change
Disable. As soon as
temperature falls, CAN is
re-enabled automatically
No change
CAN Overcurrent
No change
No change
(Note 46)
No change
CANH Short to GND
No change
No change
(Note 47)
No communication
(Note 48)
No change
CANH Short to V
DD
No change
No change
Communication OK
No change
CANH Short to V
SUP
No change
No change
Communication OK
No change
CANL Short to GND
No change
No change
Communication OK
No change
CANL Short to V
DD
No change
No change
No communication
(Note 48)
No change
CANL Short to V
SUP
No change
No change
No communication
(Note 48)
No change
Notes
46.
47.
Refer to descriptions of CANH and CANL short to GND, V
DD
, and V
SUP
elsewhere in table.
Peak current 150 mA during TXD dominant only. Due to loss of communication, CAN controller reaches bus OFF state. Average current
out of V2 is below 10 mA.
Overcurrent might be detected. Bit THERM-CUR set in CAN register.
48.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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