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| 型号： | MC33984BPNAR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 24/39页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH HI SIDE DUAL 16-PQFN |
| 标准包装： | 1,200 |
| 类型： | 高端 |
| 输入类型： | SPI |
| 输出数： | 2 |
| 导通状态电阻： | 4 毫欧 |
| 电源电压： | 6 V ~ 27 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-PowerDFN |
| 供应商设备封装： | 16-PQFN（12x12） |
| 包装： | 带卷 (TR) |
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FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
LOGIC COMMANDS AND REGISTERS
CSB
SPI PROTOCOL DESCRIPTION
The SPI interface has a full duplex, three-wire
synchronous data transfer with four I/O lines associated with
it: Serial Clock (SCLK), Serial Input (SI), Serial Output (SO),
and Chip Select ( CS ).
The SI / SO pins of the 33984 follow a first-in first-out (D7/
D0) protocol with both input and output words transferring the
most significant bit (MSB) first. All inputs are compatible with
5.0 V CMOS logic levels.
The SPI lines perform the following functions:
SERIAL CLOCK (SCLK)
Serial clocks (SCLK) the internal shift registers of the
33984 device. The serial input (SI) pin accepts data into the
input shift register on the falling edge of the SCLK signal
while the serial output (SO) pin shifts data information out of
the SO line driver on the rising edge of the SCLK signal. It is
important that the SCLK pin be in a logic low state whenever
CS makes any transition. For this reason, it is recommended
that the SCLK pin be in a Logic [0] state whenever the device
is not accessed ( CS Logic [1] state). SCLK has an active
internal pull-down, I DWN . When CS is Logic [1], signals at the
SCLK and SI pins are ignored and SO is tri-stated (high-
SERIAL INPUT (SI)
This is a serial interface (SI) command data input pin. SI
instruction is read on the falling edge of SCLK. An 8-bit
stream of serial data is required on the SI pin, starting with D7
CS
SCLK
to D0. The internal registers of the 33984 are configured and
controlled using a 4-bit addressing scheme, as shown in
in Table 10 . The SI input has an active internal pull-down,
I DWN .
SERIAL OUTPUT (SO)
The SO data pin is a tri-stateable output from the shift
register. The SO pin remains in a high-impedance state until
the CS pin is put into a Logic [0] state. The SO data is capable
of reporting the status of the output, the device configuration,
and the state of the key inputs. The SO pin changes states on
the rising edge of SCLK and reads out on the falling edge of
SCLK. Fault and Input Status descriptions are provided in
CHIP SELECT (CS)
The CS pin enables communication with the master
microcontroller (MCU). When this pin is in a Logic [0] state,
the device is capable of transferring information to, and
receiving information from, the MCU. The 33984 device
latches in data from the Input shift registers to the addressed
registers on the rising edge of CS . The device transfers status
information from the power output to the shift register on the
falling edge of CS . The SO output driver is enabled when CS
is Logic [0]. CS should transition from a Logic [1] to a Logic [0]
state only when SCLK is a Logic [0]. CS has an active internal
pull-up, I UP .
SI
SO
D7
OD7
D6
OD6
D5
OD5
D4
OD4
D3
OD3
D2
OD2
D1
OD1
D0
OD0
NOTES: 1. RSTB is in a logic 1 state during the above operation.
2. 1. D1, is a ..., and D7 relate to the the recent ordered entry
Notes D0, RST D2, Logic [1] state during most above operation. of data into the SPSS
2. OD0, OD1, OD2, to the OD7 relate to the first 8 bits of of data fault the status data
of the device.
3. D7:D0 relate ..., and most recent ordered entry ordered into and device. out
3. OD7:OD0 relate to the first 8 bits of ordered fault and status data out of the device.
Figure 9. Single 8-Bit Word SPI Communication
33984
Analog Integrated Circuit Device Data ?
24
Freescale Semiconductor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC33984CHFK | 功能描述:电源开关 IC - 配电 Dual 4mOhms smart RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MC33984CHFKR2 | 功能描述:电源开关 IC - 配电 Dual 4mOhms smart RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MC33984PNA | 制造商:Freescale Semiconductor 功能描述:POWER SWITCH HI SIDE 30A 16-PIN QFN - Trays |
| MC33984PNAR2 | 制造商:Freescale Semiconductor 功能描述:DUAL INTELLIGENT HIGH-CURRENT SELF-PROTECTED SILICON SWITCH - Tape and Reel |
| MC33988CHFK | 功能描述:电源开关 IC - 配电 DUAL 8MOHMS SMART RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
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