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| 型号： | KIT33982CEVBE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 22/36页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL 33982 HIGH SIDE SWITCH |
| 标准包装： | 1 |
| 主要目的： | 电源管理，高端驱动器（内部 FET） |
| 嵌入式： | 否 |
| 已用 IC / 零件： | MC33982 |
| 主要属性： | 输出电流监控，2 个 SPI 可选电流比 |
| 次要属性： | 过电流限制SPI控制，开路负载侦测，输出开/关，转换速率 |
| 已供物品： | 板，CD |
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FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
FUNCTIONAL DEVICE OPERATION
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 33982 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)
The SCLK pin clocks the internal shift registers of the
33982 device. The serial input pin (SI) accepts data into the
input shift register on the falling edge of the SCLK signal
while the serial output pin (SO) 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-impedance). (See Figure 10 and
SERIAL INTERFACE (SI)
This is a serial interface (SI) command data input pin. SI
instruction is read on the falling edge of SCLK. An 8-bit
CS
SCLK
stream of serial data is required on the SI pin, starting with D7
to D0. The internal registers of the 33982 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 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 33982 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
is a in a logic Notes
NOTES: 1. RSTB is Logic [1] state during the the above operation.
D0, D1, D2, the relate to the most recent entry of entry of the into the
2. D7:D0 relate ..., to and D7 most recent ordered ordered data into data device. SPSS
OD0, OD1, OD2, to the first 8 bits first 8 bits of and fault and out of
3. OD7:OD0 relate ..., and OD7 relate to of the ordered fault ordered status data status data the out device.
of the device.
Figure 10. Single 8-Bit Word SPI Communication
33982
Analog Integrated Circuit Device Data ?
22
Freescale Semiconductor
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| KIT33982PNAEVB | 功能描述:电源管理IC开发工具 SPSS HIGH-SIDE SWTCH RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| KIT33984CEVBE | 功能描述:电源管理IC开发工具 4.0 M HIGH-SIDE SW RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| KIT33984PNAEVB | 功能描述:电源管理IC开发工具 33984 - SPD4 EVAL KIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| KIT33988CEVBE | 功能描述:电源管理IC开发工具 HIGH SIDE SWITCH (8.0M) RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| KIT33989DWEVB | 功能描述:界面开发工具 33989DW HS SBC EVAL KIT RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
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