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| 型号： | MC33389CDW |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 16/49页 |
| 文件大小： | 0K |
| 描述： | IC SYSTEM BASE W/CAN 28-SOIC |
| 标准包装： | 26 |
| 控制器类型： | 系统基础芯片 |
| 接口： | CAN |
| 电源电压： | 5.5 V ~ 18 V |
| 电流 - 电源： | 45mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 管件 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
23
33389
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
SBC Normal Mode
In this mode, V1 and V2 are active, V3 can be set active
or passive via the SPI. Therefore, the whole ECU can be
operated. Normal mode is entered by a SWCR configuration
in the Normal Request mode.
SBC Stand-by Mode
In this mode V1 is active and V2 is passive. V3 can be
either permanently active or permanently passive. This is a
low power mode with V1 active in order to have a fast
reaction time in case of any wake-up.
For Stand-by mode, the S Bus Circuit (SBC) monitors the
software. It means the microcontroller runs, is monitored, and
must serve as a watchdog trigger.
S Bus Circuit Sleep Mode
This is a low power consumption mode. V1 and V2 are
disabled. V3 can be permanently disabled or cyclically active.
Emergency Mode
In case the microcontroller detects the ECU or the system
is no longer under control, it may decide to switch the SBC to
the Emergency mode. V1, V2, and V3 become passive and
wake-ups are not detected. The only way to leave this mode
is to disconnect the ECU from the battery voltage (BatFail
detection).
Table 9. Normal Request: V1 Active and V2/V3 Passive
Entering Normal Request
Leaving Normal Request
SBC Reset Just Released
When First Receiving the SW
Timing Word, SBC goes to
Normal
—
If Time-out Without Receiving
SPI Commands (75ms), SBC
goes to Seep
Table 10. SBC Normal Mode: V1/V2 Active
While V3 is Active or Passive
Entering Normal Mode
Leaving Normal Mode
By SPI command
By SPI command, going to any
other mode
After SWCR register
configuration in
Normal Request mode
Watchdog time-out, going to
Normal Request after activat-
ing Reset
—
V1 undervoltage detection,
going to Normal Request mode
after activating Reset
Table 11. Stand-by: V1 Active, V2 Passive, V3 Active
or Passive, Watchdog is Active
Entering Stand-by
Leaving Stand-by
—
If SW Timeout Going to Normal
Request After
Microcontroller Reset
By SPI Command
By SPI Command Going to any
Other Mode
—
V1 Under Voltage Detection,
Going to Normal Request Mode
After Activating Reset
—
External Activation of the RST
Pin
Table 12. SBC Sleep Mode: V1/V2 are Passive,
V3 is Passive or Cyclic
Entering Sleep Mode
Leaving Sleep Mode
If SW Timing Not Configured
75 ms After Entering
Normal Request Mode
CAN Wake-Up, Going to
Normal Request
By SPI Command
If a Wake-Up is Detected with
Cyclic Sense
For 33389ADW Only: If V1 is
Below V1 Reset for More Than
100 ms
If a Wake-Up is Detected with
Wake-Up Not Connected to V3
(permanent sense)
—
Forced Wake-Up (See Forced
Wake-Up Section)
—
SPI Wake-Up (See Wake-Up
by SPI Section)
Table 13. SBC Emergency Mode: V1:V3 are Passive
Entering Emergency Mode
Leaving Emergency Mode
By SPI Command
SBC BatFail Detection (Discon-
nection of the Battery Voltage)
Table 11. Stand-by: V1 Active, V2 Passive, V3 Active
or Passive, Watchdog is Active
Entering Stand-by
Leaving Stand-by
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