参数资料
型号: MC33996EKR2
厂商: Freescale Semiconductor
文件页数: 12/24页
文件大小: 0K
描述: IC SWITCH 16-OTPT W/SPI 32-SOIC
标准包装: 1,000
类型: 低端
输入类型: SPI
输出数: 16
导通状态电阻: 550 毫欧
电流 - 峰值输出: 1.2A
电源电压: 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-BSOP(0.295",7.50mm 宽)裸露焊盘
供应商设备封装: 32-SOICW 裸露焊盘
包装: 带卷 (TR)
配用: KIT33996EKEVB-ND - KIT EVAL 33996 16OUTPUT SW W/SPI
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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