參數(shù)資料
型號(hào)： MCZ33884EG
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： Switch Monitor Interface
中文描述： 開關(guān)顯示器接口
文件頁(yè)數(shù)： 11/21頁(yè)
文件大小： 251K
代理商： MCZ33884EG
Analog Integrated Circuit Device Data
Freescale Semiconductor
11
33884
FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
SYNCHRONIZATION (SYNC)
The Synchronization (SYNC) input is used by the slave IC
during the Polling mode. The SYNC allows multiple 33884
ICs to poll the multiple inputs concurrently. The master
controls the polling period. The slave is allowed to shut down
it’s oscillator, thereby conserving current. When the slave
receives the SYNC signal from the master, the slave starts
the internal oscillator and reads the switch inputs.
INTERRUPT (INT)
The Interrupt (INT) pin is an interrupt output from the
33884. The INT pin is an open drain output with an internal
pull-up. In the Normal mode, a switch state change triggers
the INT pin. The INT pin and INT bit (flag) are latched on the
falling edge of CS. This procedure determines the interrupt
origin. The flag INT bit in the SPI word is the inverse of the
INT pin. The INT pin is cleared on the rising edge of CS. The
INT pin is active only during the ON time (when sink and
source currents are active) in the Polling mode.
RESET (RST)
The Reset (RST) pin is active low reset input to the 33884.
When asserted, the 33884 will reset all internal registers,
timers, and enters a Sleep mode (with all switch inputs in a
Tri-State condition). Only an MCU SPI command word will
wake the 33884 from a Sleep state. The RST pin may be
controlled directly from a general purpose input/output
(GPIO) pin or from a system/MCU reset.
BANDGAP VOLTAGE (VBG)
The Bandgap Voltage (VBG) pin requires a 130 k
to
ground for standard wetting and sustain currents. The device
is tested with a 0.1 percent value, but a standard 1.0 percent
could be used to function properly.
VOLTAGE POWER (VPWR)
The Voltage Power (VPWR) pin is battery/supply source
pin for the 33884. The VPWR pin requires external reverse
battery/supply and transient protection. Maximum input
voltage on VPWR is 40 V. All wetting currents and sustain
currents are derived from VPWR.
SWITCH PINS (SP1 : SP4)
The 33884 has four programmable switch sense inputs
(SP1- P4) to read switch-to-ground or switch-to-battery/
supply contacts. Transient battery/supply voltages greater
than 40 V must be clamped by an external device. Surface
mount 0805 MOVs and transient voltage suppressors (TVS)
are available in SOT-23 packages. The sensed input is
compared with an internal 4.0 V reference. When
programmed to sense switch-to-battery,
sensed voltages
greater than 4.0 V
are interpreted as a CLOSED switch, while
sensed voltages less than 4.0 V are interpreted as an OPEN
switch
. The opposite holds true when inputs are programmed
to sense switch-to-ground. Further programming can set the
wetting currents or make the inputs Tri-State. Programming
methods are provided in the following section.
SWITCH-TO-BATTERY (SB1 AND SB2)
The two Switch-to-Battery (SB) pins sense inputs only.
Transient battery/supply voltages greater than 40 V must be
clamped by an external device. Surface mount 0805 MOVs
and transient voltage suppressors (TVS) are available in
SOT-23 packages.
The sensed input is compared with an internal 4.0 V
reference.
Voltages greater than 4.0 V are interpreted as a
CLOSED switch, while sensed voltages less than 4.0 V are
interpreted as an OPEN switch.
Programming can set wetting
currents or Tri-State the input. Programming methods are
provided in the following section.
SWITCH-TO-GROUND (SG1 : SG6)
The six Switch-to-Ground (SG) pins are inputs only. The
input is compared with the internal 4.0 V reference.
Voltages
greater than 4.0 volts are interpreted as an OPEN switch.
Voltages less than 4.0 V are interpreted as a CLOSED
switch
. Programming can set the wetting currents or Tri-State
the input. Programming methods are provided in the
following section.
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相關(guān)代理商/技術(shù)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(guān) IC SW DETECT INTERFACE RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)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(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
MCZ33887EK 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 H-BRIDGE W/LD CUR FDBK RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
MCZ33887EKR2 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 H-BRIDGE W/LD CUR FDBK RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)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
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