參數(shù)資料
型號(hào): MC33388
廠商: Motorola, Inc.
英文描述: Fault Tolerant CAN Interface
中文描述: 容錯(cuò)CAN接口
文件頁數(shù): 9/28頁
文件大?。?/td> 454K
代理商: MC33388
MC33388
MOTOROLA
9
MC33388
DEVICE DESCRIPTION
Figure 3. State Machine And Operation Modes
Table 1 Truth Table
NOTES:
1. Wake-up interrupts are released when entering normal operating mode.
2. If go to sleep command was used before (EN may turn LOW as VDD drops, without affecting internal functions because of fail safe functionality.
3. VBAT power-on flag will be reset when entering normal operation mode.
4. Value are typical, without bus load current.
5. In recessive state.
6. In Dominant State, value with no load at bus.
STB
EN
Mode
INH
NERR
RX
RTL
I
DD
(4)
I
BAT
(4)
0
0
VBAT
Standby
1
High
Active LOW:
wake-up interrupt signal
(if V
DD
is present)
Switched to
V
BAT
5
μ
A
typ. 15
μ
A
0
0
Sleep
2
Floating
Switched to
V
BAT
Not
applicable
typ. 15
μ
A
0
1
Go to sleep
command
Floating
Switched to
V
BAT
1
0
Receive Only
3
High
Active LOW:
V
BAT
power-on flag
High: recessive state
Low: dominant state
Switched to
V
DD
800
μ
A
1
1
Normal
High
Active LOW:
error flag
Switched to
V
DD
2.3mA (5)
3.3mA (6)
typ.
150
μ
A
Normal mode (1, 1)
(BUS failure, ON)
Receive Only mode (1, 0)
(VBAT fail flag, ON)
Stand-by V
BAT
mode (0, 0)
(Wake up event, ON)
Sleep mode (0, 0)
(Wake up event
1,2
, OFF)
Go to sleep mode (0, 1)
(Wake up event, OFF
3
)
(1, 0)
(0, 1)
(1, 1)
(0, 1)
(0, 0)
(1, 0)
1
with permanent V
DD
2
V
DD
is still switched on
3
if no wake-up occurs after 25
μ
s
4
as long as INH is on
(1, 1)
1
(1, 0)
1
(1, 1)
(1, 0)
(0, 0)
4
(0, 1)
(0, 0)
wake-up event
(bus message, wake pin)
power up
(0, 0)
Transceiver mode (STB state, EN state)
(NERR function, INH state)
NERR: BUS - Bus error is flagged
WAKE - Wake-up event is flagged
BAT - BAT fail is flagged
INH: ON - INH is switched on
OFF - INH is floating
Legend:
(1, 1)
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