參數(shù)資料
型號(hào)： MAX1441GUP/V+
廠商： Maxim Integrated Products
文件頁數(shù)： 29/41頁
文件大?。?/td> 0K
描述： IC PROXMITY SENSOR 2CH 20-TSSOP
其它有關(guān)文件： Automotive Product Guide
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 74
類型： 觸控式傳感器
輸入類型： 數(shù)字
輸出類型： 數(shù)字
接口： JTAG，串行
電流 - 電源： 100µA
安裝類型： 表面貼裝
封裝/外殼： 20-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 20-TSSOP
包裝： 管件
MAX1441
Automotive, Two-Channel Proximity and
Touch Sensor
35
Special System Functions
Interrupt
The device supports interrupt through the Interrupt
Vector (IV) register and the Interrupt Control (IC) register.
The IV register allows the user program to set a preferred
vector location to any program memory address. The IV
register is fixed at 07FDh. Since the reset location can
also be at 0000h, the user program must take care of
any potential conflict between the reset and interrupt
vector function.
Interrupt Sources
Interrupt sources can be classified into two categories:
Asynchronousinterrupt
Synchronousinterrupt
The device supports the following asynchronous inter-
rupts:
Externalinterrupts
Watchdoginterrupt
Timerinterrupts
AFEinterrupts
All the other internal interrupts are synchronous inter-
rupts. Synchronous internal interrupt is directly routed to
the interrupt handler that can be recognized in one cycle.
Clock Generation
All functional units in the device are synchronized
to the system clock that is generated from the 20MHz
oscillator. The basic unit of time in the device is the sys-
tem clock period. All storage logic blocks are triggered
by the rising edge of the system clock.
Clock Sources
The internal clock circuitry generates the system clock
from an internal 5MHz, which is derived from the 20MHz
oscillator (Figure 4).
Each time-code execution must start or restart
(e.g., exiting stop mode), the following sequence occurs:
1) Remove clock gating of internal 5MHz.
2) Reset the warm-up counter.
3) Wait for Flash to power up (about 10Fs).
4) Allow the required warm-up delay of eight oscillator
cycles of the 5MHz input.
The only time 20MHz turns off is if the CPU is in stop
mode and AFE is in standby mode or powered down (PD
register = 6). During stop mode, if the AFE is in standby
mode, the oscillator is periodically turned off and on to
allow the AFE to sample inputs. This causes an interrupt
to the CPU if an enabled threshold condition is met.
Figure 4. Clock Sources
20MHz
OSCILLATOR
XDOG
STARTUP
TIMER
FLASH
CONTROLLER
/4
POR
STOP
1.25MHz
STOP
RESET
POR
/4
XDOG_DONE
SYSTEM
CLOCK
5MHz
SYSTEM
CLOCK
GENERATION
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1441IUP+ 功能描述:電容觸摸傳感器 RoHS:否 制造商:Microchip Technology 電源電壓: 通道數(shù)量: 封裝 / 箱體: 尺寸: 溫度范圍:
MAX1441IUP+T 功能描述:電容觸摸傳感器 RoHS:否 制造商:Microchip Technology 電源電壓: 通道數(shù)量: 封裝 / 箱體: 尺寸: 溫度范圍:
MAX1444EHJ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1444EHJ/V+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC ANALOG TO DIGITAL CONVERTER RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1444EHJ/V+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 40Msps 3.0V Low-Power ADC with Internal Reference RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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