参数资料
| 型号： | MAX13362ATL/V+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/14页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH 1X2 40TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | 4000 |
24-Channel Automotive Switch Monitor
Detailed Description
The MAX13362 is a 24-channel automotive contact
monitor designed as an interface between mechanical
switches and low-voltage microcontrollers or other logic
circuits. It features an SPI interface to monitor individual
switch inputs and to configure interrupt capability, wet-
ting current, switch configuration (battery-connected or
ground-connected), polling time and polling active
time. Any switch status change will cause an interrupt
signal if the switch is interrupt enabled. The MAX13362
has three modes of operation: continuous mode, polling
mode, and shutdown mode.
V DD and VS
V DD is the power-supply input for the logic input/
output circuitry. Connect V DD to a 3V to 5.5V logic-level
supply. Bypass V DD to GND with at least a 0.1μF
capacitor placed as close as possible to V DD .
VS is the main power-supply input. Bypass VS to GND
with a 0.1μF ceramic capacitor placed as close as pos-
sible to VS. In addition, bypass VS with a 47μF or
greater capacitor.
Mechanical Switch Inputs (IN0–IN23)
IN0–IN23 are the inputs for remote mechanical switch-
es. The switch status is indicated by the S0–S23 bits in
the status register, and each switch input can be pro-
grammed to assert an interrupt ( INT ) by writing to the
IE0–IE23 bits in the command register. All switch inputs
are interrupt disabled upon power-up.
The IN4–IN22 inputs are intended for ground-connect-
ed switches. The IN0–IN3 and IN23 inputs can be pro-
grammed for either ground-connected switches or
battery-connected switches by writing to the LH0–LH3
and LH23 bits (see Table 2). The default configuration
of the IN0–IN3 and IN23 inputs after power-up is for
ground-connected switches.
Wetting Current
The MAX13362 applies a programmable wetting current
to any closed switch to clean switch contacts that are
exposed to adverse conditions. The wetting current for
each switch can be set to 0mA, 5mA, 10mA, or 15mA
by the W_.0 and W_.1 data bits in the command regis-
ters (see Table 5) by means of an SPI data transaction.
When using wetting current, special care must be
taken to avoid exceeding the maximum power dissipa-
tion of the MAX13362 (see the Applications Information
section). Disabling the wetting current or limiting the
active-wetting current time reduces power consump-
tion. The default state upon power-up is with wetting
current disabled.
Interrupt Output ( INT )
INT is an active-low, open-drain output that asserts low
when any of the switch inputs change state and is
enabled for interrupts, or when the overtemperature
threshold is exceeded. An external pullup resistor to
V DD is needed on INT . INT is cleared when CS is driven
low for a read/write operation. However, in polling mode,
any switch state change or overtemperature change
which occurs during an SPI transaction is stored and
causes an additional interrupt after the SPI transaction is
over and CS goes high (shown in Figure 2).
If V DD is absent, the INT output is functional provided
that it is pulled up to a different supply voltage.
CS
SWITCH STATUS CHANGE
CLK
INT
NEW INTERRUPT
Figure 2. Switch State Change During the SPI transaction
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相关代理商/技术参数 |
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| MAX13362EVKIT+ | 功能描述:界面开发工具 Evaluation Kit for the MAX13362 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 |
| MAX13366GTE/V+ | 功能描述:板机接口霍耳效应/磁性传感器 Auto Quad 2-Wire Hall Effect Sw Int RoHS:否 制造商:Honeywell 类型:Bipolar Hall-Effect Digital Position Sensor 工作电源电压:3 V to 24 V 电源电流:3.5 mA 最大输出电流:20 mA 工作点最小值/最大值:5 G, 55 G 最小/最大释放点（Brp）:- 55 G, - 5 G 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23 |
| MAX13366GTE/V+T | 功能描述:板机接口霍耳效应/磁性传感器 Auto Quad 2-Wire Hall Effect Sw Int RoHS:否 制造商:Honeywell 类型:Bipolar Hall-Effect Digital Position Sensor 工作电源电压:3 V to 24 V 电源电流:3.5 mA 最大输出电流:20 mA 工作点最小值/最大值:5 G, 55 G 最小/最大释放点（Brp）:- 55 G, - 5 G 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23 |
| MAX1338ETN | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1338ETN+ | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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