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| 型號(hào)： | MC33298DW |
| 廠商： | Freescale Semiconductor |
| 文件頁(yè)數(shù)： | 7/28頁(yè) |
| 文件大小： | 0K |
| 描述： | IC SWITCH SERIAL OCTAL 24-SOIC |
| 標(biāo)準(zhǔn)包裝： | 30 |
| 類型： | 低端 |
| 輸入類型： | SPI |
| 輸出數(shù)： | 8 |
| 導(dǎo)通狀態(tài)電阻： | 350 毫歐 |
| 電流 - 輸出 / 通道： | 1A |
| 電流 - 峰值輸出： | 4A |
| 電源電壓： | 9 V ~ 26.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SOIC W |
| 包裝： | 管件 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
15
33298
FUNCTIONAL DESCRIPTION
INTRODUCTION
ARCHIVE
INFORMATION
ARCHIVE
INFORMATION
FUNCTIONAL PIN DESCRIPTION
Figure 16. Multiple MCU SPI Control
CHIP SELECT (CS)
The 33298 receives its MCU communication through the
CS pin. Whenever this pin is in a logic low state, data can be
transferred from the MCU to the 33298 by way of the SI pin
and from the 33298 to the MCU through the SO pin. Clocked-
in data from the MCU is transferred from the 33298 Shift
register and latched into the power outputs on the rising edge
of the CS signal. On the falling edge of the CS signal, drain
status information is transferred from the power outputs then
loaded into the Shift register of the device. The CS pin also
controls the output driver of the serial output (SO) pin.
Whenever the CS pin goes to a logic low state, the SO pin
output driver is enabled allowing information to be transferred
from the 33298 to the MCU. To avoid data corruption or the
generation of spurious data, it is essential the high-to-low
transition of the CS signal occur only when SCLK is in a logic
low state.
SYSTEM CLOCK (SCLK)
The system clock (SCLK) pin clocks the internal shift
registers of the 33298. 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.
False clocking of the Shift register must be avoided to
guarantee validity of data. It is essential the SCLK pin be in a
logic low state whenever the chip select bar (CS) pin makes
any transition. For this reason, it is recommended, though not
absolutely necessary, the SCLK pin be kept in a low logic
state as long as the device is not accessed (CS in logic high
state). When CS is in a logic high state, signals at the SCLK
and SI pins are ignored and SO is tri-stated (high-
impedance). See the Data Transfer Timing diagram in
SERIAL INPUT (SI)
This pin is for the input of serial instruction (SI) data. SI is
read on the falling edge of SCLK. A logic high state present
on this pin when the SCLK signal rises will program a specific
output OFF. In turn, the pin turns OFF the specific output on
the rising edge of the CS signal. Conversely, a logic low state
present on the SI pin will program the output ON, In turn, the
pin turns ON the specific output on the rising edge of the CS
signal.
To program the eight outputs of the 33298 ON or OFF, an
8-bit serial stream of data is required to be synchronously
entered into the SI pin starting with Output 7, followed by
Output 6, Output 5, and so on, to Output 0. Referring to
Figure 18, the DO bit is the most significant bit (MSB)
corresponding to Output 7. For each rise of the SCLK signal,
with CS held in a logic low state, a data-bit instruction (ON or
OFF) is synchronously loaded into the Shift register per the
data-bit SI state. The Shift register is full after eight bits of
information have been entered. To preserve data integrity,
SI
SO
SCLK
CS
8-Bit
33298
SI
SO
SCLK
CS
8-Bit
33298
SI
SO
SCLK
CS
8-Bit
33298
8 Outputs
VDD
B0
B1
B0
B1
MC68XX
Microcontroller
SPI
(Master)
A0
A1
A2
A0
A1
A2
MC68XX
Microcontroller
SPI
(Alternate Master)
8-Bit
Parallel
Ports
Parallel
Ports
SCLK
MISO
MOSI
SCLK
MISO
MOSI
SS
8-Bit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| MC33298DWR2 | 功能描述:IC OCTAL SERIAL SWITCH 24-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動(dòng)器 - 內(nèi)部開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:高端/低端驅(qū)動(dòng)器 輸入類型:SPI 輸出數(shù):8 導(dǎo)通狀態(tài)電阻:850 毫歐，1.6 歐姆 電流 - 輸出 / 通道:205mA，410mA 電流 - 峰值輸出:500mA，1A 電源電壓:9 V ~ 16 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:PG-DSO-20-45 包裝:帶卷 (TR) |
| MC33298P | 功能描述:IC SWITCH SERIAL OCTAL 20-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅(qū)動(dòng)器 - 內(nèi)部開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:高端/低端驅(qū)動(dòng)器 輸入類型:SPI 輸出數(shù):8 導(dǎo)通狀態(tài)電阻:850 毫歐，1.6 歐姆 電流 - 輸出 / 通道:205mA，410mA 電流 - 峰值輸出:500mA，1A 電源電壓:9 V ~ 16 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:PG-DSO-20-45 包裝:帶卷 (TR) |
| MC33304P | 制造商:ON Semiconductor 功能描述: |
| MC3330P | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC33340D | 功能描述:電池管理 18V Max NiCD/NiMH RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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