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| 型号： | MC33912BAC |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 32/95页 |
| 文件大小： | 0K |
| 描述： | IC SYSTEM BASIS CHIP 32LQFP |
| 标准包装： | 250 |
| 应用： | 系统基础芯片 |
| 电流 - 电源： | 4.5mA |
| 电源电压： | 5.5 V ~ 27 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 托盘 |
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MC33912G5AC / MC34912G5AC
FUNCTIONAL DEVICE OPERATIONS
OPERATIONAL MODES
Table 7. Fault Detection Management Conditions
MONITORING (70)
BLOCK
Power Supply
FAULT
BATTERY FAIL
VSUP OVER-
VOLTAGE
VSUP UNDER-
VOLTAGE
VDD UNDER-
VOLTAGE
MODE
All modes
Normal, Normal
Request
All except Sleep
CONDITION
V SUP <3.0 V (typ) then
power-up
V SUP > 19.25 V (typ)
V SUP < 6.0 V (typ)
V DD < 4.5 V (typ)
FALLOUT
-
In Normal mode, HS
and LS shutdown if bit
HVSE=1 (reg MCR)
-
Reset (69)
RECOVERY
Condition gone
Condition gone, to re-
enable HS or LS write
to HSCR or LSCR
registers
REG (FLAG,
BIT)
VSR (BATFAIL, 0)
VSR (VSOV,3)
VSR (VSUV,2)
-
INTERRUPT
-
IRQ low +
ISR (0101)
IRQ low + ISR (0101)
-
Condition gone
VDD OVER-TEMP
PREWARNING
All except Low Power
Temperature > 115°C
(typ)
-
VSR (VDDOT,1)
IRQ low + ISR (0101)
VDD OVER-
TEMPERATURE
RXD PIN SHORT
CIRCUIT
modes
Temperature > 170°C VDD shutdown, Reset
(typ) then Sleep
RXD pin shorted to
LIN trans shutdown
GND or 5 V
-
LINSR,
(RXSHORT,3)
-
LIN
TXD PIN
PERMANENT
DOMINANT
Normal, Normal
Request
TXD pin low for more
than 1s (typ)
LIN transmitter
shutdown
LIN transmitter re-
enabled once the
condition is gone and
TXD is high
LINSR (TXDOM,2)
IRQ low + ISR
(0100) (71)
LIN DRIVER OVER-
TEMPERATURE
Temperature > 160°C
(typ)
LINSR (LINOT,1)
HIGH SIDE DRIVERS
OVER-
TEMPERATURE
Temperature > 160°C Both HS thermal
(typ) shutdown
Condition gone, to re-
enable HS write to
HSCR reg
All flags in HSSR are
set
IRQ low + ISR (0010)
High Side
HS1 OPEN-LOAD
DETECTION
HS2 OPEN-LOAD
DETECTION
Normal, Normal
Request
Current through HSx
< 5.0 mA (typ)
-
HSSR (HS1OP,1)
HSSR (HS2OP,3)
Condition gone
-
HS1 OVER-
CURRENT
HS2 OVER-
CURRENT
Current through HSx
tends to rise above
the current limit
60 mA (min)
HSx on with limited
current capability
60 mA (min)
HSSR (HS1CL,0)
HSSR (HS2CL,2)
LOW SIDE DRIVERS
OVER-
TEMPERATURE
Temperature > 160°C Both LS thermal
(typ) shutdown
Condition gone, to re-
enable LS write to
LSCR reg
All flags in LSSR are
set
IRQ low + ISR (0011)
Low Side
LS1 OPEN-LOAD
LS2 OPEN-LOAD
Normal, Normal
Request
Current through LSx <
7.5mA (typ)
-
LSSR (LS1OP,1)
LSSR (LS2OP,3)
LS1 OVER-CURRENT
LS2 OVER-CURRENT
Current through LSx
tends to rise above
the current limit
160 mA (min)
LSx on with limited
current capability
160 mA (min)
-
LSSR (LS1CL,0)
LSSR (LS2CL,2)
-
The MCU did not
NORMAL REQUEST
TIME-OUT EXPIRED
Normal Request
command the device
to Normal mode
within the 150 ms
Reset
-
timeout after reset
-
Watchdog
WATCHDOG
TIMEOUT
WATCHDOG ERROR
Normal
Normal
WD timeout or WD
clear within the
window closed
WDCONF pin is
floating
Reset
WD internal lower
precision timebase
150 ms (typ)
Connect WDCONF to
a resistor or to GND
WDSR (WDTO, 3)
WDSR (WDERR, 2)
-
Notes
69.
70.
71.
When in Reset mode a VDD under-voltage condition combined with no V SUP under-voltage (VSUV=0) will send the device to Sleep mode.
Registers to be read when back in Normal Request or Normal mode depending on the fault. Interrupts only generated in Normal, Normal Request and Stop modes
Unless masked, If masked IRQ remains high and the ISR flags are not set.
33912
Analog Integrated Circuit Device Data ?
32
Freescale Semiconductor
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