- 您現(xiàn)在的位置：買賣IC網 > PDF目錄359155 > MCZ33884EG (飛思卡爾半導體(中國)有限公司) Switch Monitor Interface PDF資料下載
參數(shù)資料
| 型號： | MCZ33884EG |
| 廠商： | 飛思卡爾半導體(中國)有限公司 |
| 英文描述： | Switch Monitor Interface |
| 中文描述： | 開關顯示器接口 |
| 文件頁數(shù)： | 9/21頁 |
| 文件大?。?/td> | 251K |
| 代理商： | MCZ33884EG |
Analog Integrated Circuit Device Data
Freescale Semiconductor
9
33884
FUNCTIONAL DESCRIPTION
INTRODUCTION
FUNCTIONAL DESCRIPTION
INTRODUCTION
The 33884 is a monolithic integrated circuit designed to
interface between external electrical system switches and
low voltage microprocessors via a Serial Peripheral Interface
(SPI). The 33884 monitors the OPEN/CLOSED status of
multiple external switches used in a system. The 33884
features four programmable Switch-to-Ground or Battery
sense inputs, 6 Switch-to-Ground sense inputs, 2 Switch-to-
Battery sense inputs, programmable Wake up Timer,
programmable Interrupt Timer, and programmable wetting
current settings. All inputs are protected for ESD transients
when implemented with the appropriate ESD capacitor.
There are numerous applications for this device in aircraft,
aerospace, robotic, process & control, automotive, and
security systems. Potential applications exist where switch
status verification for safety, fault tolerant operation, or
process control function purposes are critical.
The 33884 has four modes of operation: Sleep, Normal,
Polling, and Polling + INT Timer.
The 33884 is designed to provide a robust interface
between system switch contacts and a microprocessor. Each
33884 input provides the switch contact with high levels of
wetting current during switch closure. After the input switch
has been closed for 20 ms, the wetting current is reduced,
hence reducing power dissipation in the IC. The response to
a SPI command will always return Switch Status, Master/
Slave, INT Flag, and Mode settings. The following section
describes the programming modes and features of the
33884.
MICROPROCESSOR INTERFACE
The M33884 directly interfaces to 3.3 or 5.0 V MCU. SPI
serial clock frequencies in excess of 5.0 MHz may be used for
programming and reading switch input status. Figure 4 shows
the configuration between an MCU and one 33884.
Figure 4. SPI Interface with Microprocessor
The 33884, though originally designed for automotive use,
is very useful in a variety of other applications, i.e., computer,
telecommunications, and industrial fields. It is parametrically
specified over an input battery/supply voltage of 9.0 to 16.0 V
but is designed to operate over a considerably wider range of
5.5 to 26.5 V.
Two or more 33884 devices may be used in a module
system when implemented in a parallel or serial
configuration.
Figure 5
and
Figure 6
show the parallel and
serial configurations respectively. When using the Serial
configuration, 32 clock cycles are required for a complete
transfer of data to the 33884.
MC68HCXX
Microcontroller
33884
MISO
MOSI
16 Bit Shift Register
16 Bit Shift Register
RST
SCLK
CS
INT
SO
SI
INT
To Logic
Buffer
Parallel
Ports
相關PDF資料 |
PDF描述 |
|---|---|
| MCZ33887EK | 5.0 A H-Bridge with Load Current Feedback |
| MCZ33889BEG | System Basis Chip with Low Speed Fault Tolerant CAN Interface |
| MCZ33927EK | Transistor; Type: Amplifiers/Bipolar; VCEO (V): -100; Ic (A): -1; Pc (W): 0.9; hFE: 140 to 350; VCE (sat) (V) max: -0.5; Package: TO-92Mod |
| MCZ33970EG | Dual Gauge Driver Integrated Circuit with Improved Damping Algorithms |
| MCZ33976EG | Dual Gauge Driver with Configurable esponse Time |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MCZ33884EG | 制造商:Freescale Semiconductor 功能描述:SWITCH MONITOR INTERFACE 24SOIC |
| MCZ33884EGR2 | 功能描述:多路器開關 IC SW DETECT INTERFACE RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MCZ33887EK | 功能描述:馬達/運動/點火控制器和驅動器 H-BRIDGE W/LD CUR FDBK RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| MCZ33887EKR2 | 功能描述:馬達/運動/點火控制器和驅動器 H-BRIDGE W/LD CUR FDBK RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| MCZ33887EKR2DH | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:5.0 A H-Bridge with Load Current Feedback |
發(fā)布緊急采購，3分鐘左右您將得到回復。