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参数资料
| 型号： | KIT33879AEKEVBE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 16/23页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR MC33879 |
| 标准包装： | 1 |
| 主要目的： | 电源管理，高端和低端驱动器（内部 FET） |
| 嵌入式： | 否 |
| 已用 IC / 零件： | MC33879 |
| 主要属性： | 8 个输出硬件-可配置 |
| 次要属性： | 16 位串行输入控制 |
| 已供物品： | 板，CD |
FUNCTIONAL DESCRIPTION
SPI DEFINITION
SPI DEFINITION
On each SPI communication, a 16-bit command word is
sent to the 33879 and a 16-bit status word is received from
the 33879. The MSB is sent and received first. As Table
shows, the Command Register defines the position and
operation the 33879 will perform on rising edge of CS . The
Table 6. Command Register Definition
MSB
Fault Register, shown in Table 6 , defines the previous state
status of the output driver. Table identifies the type of fault
and the method by which the fault is communicated to the
microprocessor
LSB
Bit 15
ON /
OFF
Bit 14
ON /
OFF
Bit 13
ON /
OFF
Bit 12
ON /
OFF
Bit 11
ON /
OFF
Bit 10
ON /
OFF
Bit 9
ON /
OFF
Bit 8
ON /
OFF
Bit 7
ON /
OFF
Bit 6
ON /
OFF
Bit 5
ON /
OFF
Bit 4
ON /
OFF
Bit 3
ON /
OFF
Bit 2
ON /
OFF
Bit 1
ON /
OFF
Bit 0
ON /
OFF
Open
Load
Detect
8
Open
Load
Detect
7
Open
Load
Detect
6
Open
Load
Detect
5
Open
Load
Detect
4
Open
Load
Detect
3
Open
Load
Detect
2
Open
Load
Detect
1
OUT 8 OUT 7 OUT 6 OUT 5 OUT 4 OUT 3 OUT 2 OUT 1
0 = Bits 0 to 7, Output commanded OFF.
0 = Bits 8 to 15, Open Load Detection Current OFF.
Table 7. Fault Register Definition
MSB
1 = Bits 0 to 7, Output commanded ON.
1 = Bits 8 to 15 Open Load Detection Current ON.
LSB
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
0
0
0
0
0
OUT 8 OUT 7 OUT 6 OUT 5 OUT 4 OUT 3 OUT 2 OUT 1
Status
Status
Status
Status
Status
Status
Status
Status
0 = Bits 0 to 7, No Fault at Output.
1 = Bits 0 to 7, Output Short-to-Battery, Short-to-GND,
Open Load, or T LIM .
Table 8. Fault Operation
Serial Output (DO) Pin Reports
Bits 8 to 15 will always return “0”.
Over-temperature
Over-current
Output ON Open Load Fault
Output OFF Open Load Fault
Fault reported by serial output (DO) pin.
DO pin reports short to battery/supply or over-current condition.
Not reported.
DO pin reports output OFF open load condition only with Open Load Detection Current enabled. ?
DO pin will report “0” for Output OFF Open Load Fault with Open Load Detection Current disabled.
Device Shutdowns
Over-voltage
Over-temperature
Total device shutdown at V PWR = V PWR(OV) V. Resumes normal operation with proper voltage. All
outputs assuming the previous state upon recovery from over-voltage.
Only the output experiencing an over-temperature shuts down. Output assumes previous state upon
recovery from over-temperature.
33879
Analog Integrated Circuit Device Data ?
16
Freescale Semiconductor
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