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参数资料
| 型号： | KIT33996EKEVB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 12/24页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL 33996 16OUTPUT SW W/SPI |
| 标准包装： | 1 |
| 主要目的： | 电源管理，低端驱动器（内部 FET） |
| 嵌入式： | 否 |
| 已用 IC / 零件： | MC33996 |
| 主要属性： | 16 输出，5 ~ 27V，0.9 ~ 2.5A，SPI 接口，PWM 接口 |
| 次要属性： | 0.55 欧 RdsON，温度，过压，短路保护 |
| 已供物品： | 板，CD |
| 相关产品： | MC33996EK-ND - IC SWITCH 16OUTPUT W/SPI 32-SOIC MC33996EKR2-ND - IC SWITCH 16-OTPT W/SPI 32-SOIC |
FUNCTIONAL DESCRIPTION
OPERATIONAL MODES
Diagnostics is treated in a similar manner — outputs with a
fault will feedback (via SO) to the MCU a logic [1], while
normal operating outputs will provide a logic [0].
MC68HCXX
Microcontroller
33996
The 33996 may be controlled and provide diagnostics
using a daisy chain configuration or in parallel mode.
Figure 10 shows the daisy chain configuration using the
33996. Data from the MCU is clocked daisy chain through
each device while the Chip Select bit ( CS ) is commanded low
by the MCU. During each clock cycle, output status from the
daisy-chained 33996s is being transferred back to the MCU
via the Master In Slave Out (MISO) line. On rising edge of CS ,
data stored in the input register is transferred to the output
driver. Daisy chain control of the 33996 requires 24 bits per
device.
Multiple 33996 devices can be controlled in a parallel input
fashion using the SPI. Figure 11 , page 12 , illustrates
potentially 32 loads being controlled by two dedicated
parallel MCU ports used for chip select.
Shift Register
Parallel
Ports
MOSI
MISO
SCLK
PWM1
PWM2
SI
SO
SCLK
CS
PWM
RST
SI
SO
33996
SCLK
CS
PWM
RST
Figure 10. 33996 SPI System Daisy Chain
MC68HCXX
Microcontroller
33996
Shift Register
Parallel
Ports
MOSI
MISO
SCLK
PWM1
PWM2
SI
SO
SCLK
CS
PWM
RST
33996
SI
SO
SCLK
CS
PWM
RST
Figure 11. Parallel Inputs SPI Control
33996
Analog Integrated Circuit Device Data
12
Freescale Semiconductor
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