参数资料
| 型号： | MAXQ2000-RAX+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 22/39页 |
| 文件大小： | 0K |
| 描述： | IC MCU 32K FLASH 68-QFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 30 |
| 系列： | MAXQ® |
| 核心处理器： | RISC |
| 芯体尺寸： | 16-位 |
| 速度： | 20MHz |
| 连通性： | 1 线，SPI，UART/USART |
| 外围设备： | LCD，POR，PWM，WDT |
| 输入/输出数： | 50 |
| 程序存储器容量： | 64KB（32K x 16） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 2K x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.8 V ~ 2.75 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 68-QFN 裸露焊盘 |
| 包装： | 管件 |
| 产品目录页面： | 703 (CN2011-ZH PDF) |
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MAXQ2000
Low-Power LCD Microcontroller
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29
High-Speed Hardware Multiplier
The hardware multiplier module performs high-speed
multiply, square, and accumulate operations, and can
complete a 16-bit x 16-bit multiply-and-accumulate
operation in a single cycle. The hardware multiplier
consists of two 16-bit parallel-load operand registers
(MA, MB), an accumulator that is formed by up to three
16-bit parallel registers (MC2, MC1, and MC0), and a
status/control register (MCNT). Loading the registers
can automatically initiate the operation, saving time on
repetitive calculations. The accumulate function of the
hardware multiplier is an essential element of digital fil-
tering, signal processing, and PID control systems.
The hardware multiplier module supports the following
operations:
Multiply unsigned (16 bit x 16 bit)
Multiply signed (16 bit x 16 bit)
Multiply-Accumulate unsigned (16 bit x 16 bit)
Multiply-Accumulate signed (16 bit x 16 bit)
Square unsigned (16 bit)
Square signed (16 bit)
Square-Accumulate unsigned (16 bit)
Square-Accumulate signed (16 bit)
Real-Time Clock
A binary real-time clock keeps the time of day in
absolute seconds with 1/256-second resolution. The
32-bit second counter can count up to approximately
136 years and be translated to calendar format by the
application software. A time-of-day alarm and indepen-
dent subsecond alarm can cause an interrupt, or wake
the device from Stop mode.
The independent subsecond alarm runs from the same
RTC, and allows the application to perform periodic
interrupts up to ones with a granularity of approximately
3.9ms. This creates an additional timer that can be
used to measure long periods without performance
degradations. Traditionally, long time periods have
been measured using multiple interrupts from shorter
programmable timers. Each timer interrupt required
servicing, with each accompanying interruption slowing
system operation. By using the RTC subsecond timer
as a long-period timer, only one interrupt is needed,
eliminating the performance hit associated with using a
shorter timer.
An internal crystal oscillator clocks the RTC using inte-
grated 6pF load capacitors, and give the best perfor-
mance when mated with a 32.768kHz crystal rated for a
6pF load. No external load capacitors are required.
Higher accuracy can be obtained by supplying an exter-
nal clock source to the RTC. The frequency accuracy of
a crystal-based oscillator circuit is dependent upon crys-
tal accuracy, the match between the crystal and the
oscillator capacitor load, ambient temperature, etc. An
error of 20ppm is equivalent to approximately 1 minute
per month.
Programmable Timers
The microcontroller incorporates three 16-bit program-
mable instances of the Timer 2 peripheral, denoted
TR2A, TR2B, and TR2C. These timers can be used in
counter/timer/capture/compare/PWM functions, allow-
ing precise control of internal and external events.
Timer 2 supports optional single-shot, external gating,
and polarity control options.
Timer 2
The Timer 2 peripheral includes the following:
16-bit autoreload timer/counter
16-bit capture
16-bit counter
8-bit capture and 8-bit timer
8-bit counter and 8-bit timer
Watchdog Timer
An internal watchdog timer greatly increases system
reliability. The timer resets the device if software execu-
tion is disturbed. The watchdog timer is a free-running
counter designed to be periodically reset by the appli-
cation software. If software is operating correctly, the
counter will be periodically reset and never reach its
maximum count. However, if software operation is inter-
rupted, the timer does not reset, triggering a system
reset and optionally a watchdog timer interrupt. This
protects the system against electrical noise or electro-
static discharge (ESD) upsets that could cause uncon-
trolled processor operation. The internal watchdog
timer is an upgrade to older designs with external
watchdog devices, reducing system cost and simulta-
neously increasing reliability.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAXQ2000-RAX+ | 功能描述:16位微控制器 - MCU Low-Power LCD MCU RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT |
| MAXQ2000-RAXX | 制造商:Maxim Integrated Products 功能描述:BLOOD GLUCOSE MICRO 68QFN - Rail/Tube |
| MAXQ2000-RBX | 功能描述:16位微控制器 - MCU Low-Power LCD MCU RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT |
| MAXQ2000-RBX+ | 功能描述:16位微控制器 - MCU Low-Power LCD MCU RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT |
| MAXQ2000-RBXX | 制造商:Maxim Integrated Products 功能描述:BLOOD GLUCOSE MICRO 56TQFN - Rail/Tube |
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