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33902 数据表(PDF) 13 Page - Freescale Semiconductor, Inc

部件名 33902
功能描述  High Speed CAN Interface with Embedded 5.0 V Supply
PDF  31 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

33902 数据表(HTML) 13 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
13
33902
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
STATE DIAGRAMS
Figure 8. State Diagram
Notes
1.
Coming from Standby mode
2.
If VI/O is still switched on
3.
Coming from Normal mode
4.
If batfail flag and wake-up flag are cleared. An attempt to enter Sleep mode without batfail and wake-up flag cleared has no effect
5.
Limited current capability, to maintain the capacitor at VDD charged.
6.
A high level on INH will report a wake-up in Sleep mode
7.
After 4 TXD pulses rising edge
Normal mode (STBY 1, EN 1)
VDD ON, INH ON
Listen Only (STBY 1, EN 0)
Standby (STBY 0, EN 0)
(From any state if
VI/O low, after
TVIO-SLP, if
VSUP > VSUV
Driver ON; Receiver ON, SPLIT 2.5 V
VDD ON, INH ON
Driver OFF; Receiver ON, SPLIT 2.5 V
Go to sleep (STBY 0, EN 1)
VDD ON, INH ON
Terminated to ground, SPLIT HZ
ERR report: Wake-up
Sleep (STBY 0, EN 0)
Terminated to ground, SPLIT HZ
ERR report: Wake-up (2)
Terminated to ground, SPLIT HZ
ERR report: Wake-up
Mode (STBY, EN)
Legend:
(CAN, SPLIT)
(ERR)
t>tH
(VDD ON, INH)
if VIO ON (2)
Power
Down
Power up
Local or CAN
wake-up
if VIO ON (2)
STBY 1
STBY 1
STBY 1
STBY 0
STBY 0
EN 1
EN 1
EN 1
EN 0
STBY 1
EN 1
STBY 0
EN 0
EN 0
STBYB 0
EN 1
STBYB 1
EN 1
STBY 1
EN 0
STBY 0
EN 0
STBY 1
EN 0
and with
VIO > VIO low threshold
STBY 1
EN 1
and
VIO > VIO low threshold
Automatic transition
Controlled transition
VDD OFF, INH HZ (6)
VDD ON
(5), INH ON
ERR report: BATfail) (1)
(VDD low, local failure)
(3)
ERR report: wake-up source &
(VDD low and CAN bus failure) (7)



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