參數資料
型號: MAXQ7667AACM+
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 16 MHz, RISC MICROCONTROLLER, PQFP48
封裝: 7 X 7 MM, ROHS COMPLIANT, LQFP-48
文件頁數: 14/39頁
文件大?。?/td> 582K
代理商: MAXQ7667AACM+
MAXQ7667
16-Bit, RISC, Microcontroller-Based,
Ultrasonic Distance-Measuring System
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21
MAXQ is a registered trademark of Maxim Integrated Products, Inc.
Type 2 Timers/Counters
The MAXQ7667 includes three 16-bit timers/counters
with programmable I/O (Figure 9). Each timer is a Type
2 timer implemented in the MAXQ family. The Type 2
timer is an autoreload 16-bit timer/counter offering the
following functions:
8-bit/16-bit timer/counter
Up/down autoreload
Counter function of external pulse
Capture
Compare
Clock Sources
The MAXQ7667 oscillator module supplies the system
clock for the C core and all of the peripheral modules.
The high-frequency oscillator operates with a 1MHz to
16MHz crystal. Use the internal RC oscillator as the
system clock for applications that do not require pre-
cise timing. See Section 15 of the
MAXQ7667 User’s
Guide.
The MAXQ7667 supports the following master clock
sources:
Internal high-frequency oscillator drives an exter-
nal 1MHz–16MHz crystal or ceramic resonator
Internal, fast-starting, 13.5MHz RC oscillator
(default oscillator at startup and in the event the
external crystal fails)
External 4MHz–16MHz clock input
Crystal Selection
The MAXQ7667 requires a crystal with the following
specifications:
Frequency: 1MHz–16MHz
CLOAD: 6pF (min)
Drive level: 5W
Series resonance resistance: 30
Ω (max)
Note: Quartz crystal vendors often specify series reso-
nance resistance (R1). Series resonance resistance is
the resistance observed when the resonator is in the
series resonant condition. When a resonator is used in
the parallel resonant mode with an external load capac-
itance, as is the case with the MAXQ7667 oscillator cir-
cuit, the effective resistance at the loaded frequency of
oscillation is:
R1 x (1 + (CO/CLOAD))2
For typical shunt capacitance (CO) and load capaci-
tance (CLOAD) values, the effective resistance poten-
tially exceeds R1 by a factor of 2.
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相關代理商/技術參數
參數描述
MAXQ7667AACM/V+ 功能描述:16位微控制器 - MCU 16-Bit RISC MCU-Bsd Ultrasonic DMS RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT
MAXQ7667AACM/V+T 功能描述:16位微控制器 - MCU 16-Bit RISC MCU-Bsd Ultrasonic DMS RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風格:SMD/SMT
MAXQ7667AACM+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAXQ7667EVKIT 功能描述:開發(fā)板和工具包 - 其他處理器 RoHS:否 制造商:Freescale Semiconductor 產品:Development Systems 工具用于評估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓:
MAXQ7667EVKIT+ 功能描述:開發(fā)板和工具包 - 其他處理器 MAXQ7667 Eval Kit RoHS:否 制造商:Freescale Semiconductor 產品:Development Systems 工具用于評估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: