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参数资料
| 型号： | MAXQ3120-FFN+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/33页 |
| 文件大小： | 0K |
| 描述： | IC MCU 32KB FLASH 80-MQFP |
| 标准包装： | 66 |
| 系列： | MAXQ® |
| 核心处理器： | RISC |
| 芯体尺寸： | 16-位 |
| 速度： | 8MHz |
| 连通性： | UART/USART |
| 外围设备： | LCD，POR，PWM，WDT |
| 输入/输出数： | 32 |
| 程序存储器容量： | 32KB（16K x 16） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 512 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.8 V ~ 3.6 V |
| 数据转换器： | A/D 2x16b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 80-BQFP |
| 包装： | 托盘 |
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MAXQ3120
LCD Driver
The MAXQ3120 microcontroller incorporates an LCD
driver that interfaces to common low-voltage displays.
By incorporating the LCD driver into the microcon-
troller, the design requires only an LCD glass rather
than a considerably more expensive LCD module.
Every character in an LCD glass is composed of one or
more segments, each of which is activated by selecting
the appropriate segment and common signal. The
microcontroller can drive up to 112 LCD glass seg-
ments by multiplexing combinations of 28 segment
(SEG0–SEG27) outputs and four common-signal out-
puts (COM0–COM3). Eight of the segment outputs can
also be used as general-purpose port pins, if they are
not needed to drive the LCD.
The segments are easily addressed by writing to dedi-
cated display memory. Once the LCD driver settings
and display memory have been initialized, the 14-byte
display memory is periodically scanned, and the seg-
ment and common signals are generated automatically
at the selected display frequency. No additional proces-
sor overhead is required while the LCD driver is running.
Unused display memory can be used for general-pur-
pose storage.
The design is further simplified and cost-reduced by
the inclusion of software-adjustable internal voltage-
dividers to control display contrast. If desired, contrast
can also be controlled by an external resistance. The
features of the LCD driver include the following:
Automatic LCD segment and common-drive signal
generation
Four display modes supported:
Static (COM0)
1/2 duty multiplexed with 1/2 bias voltages
(COM0, COM1)
1/3 duty multiplexed with 1/3 bias voltages
(COM0, COM1, COM2)
1/4 duty multiplexed with 1/3 bias voltages
(COM0, COM1, COM2, COM3)
Up to 28 segment outputs and four common-signal
outputs
14 bytes (112 bits) of display memory
Adjustable frame frequency
Internal voltage-divider resistors eliminate require-
ment for external components
Internal adjustable resistor allows contrast adjust-
ment without external components
Flexibility to use external resistors to adjust drive
voltages and current capacity
A simple LCD-segmented glass interface example
demonstrates the minimal hardware required to inter-
face to a MAXQ3120 microcontroller. A two-character
LCD is controlled, with each character containing
seven segments plus decimal point. The LCD driver is
configured for 1/2 duty cycle operation, meaning the
active segment is controlled using a combination of
segment signals, and COM0 or COM1 signals are used
to select the active display.
High-Precision ADC
Mixed-Signal Microcontroller
26
____________________________________________________________________
Figure 5. Two-Character, 1/2 Duty, LCD Interface Example
SEG0
SEG1
SEG2
SEG3
COM0
SEG0:7
CONNECTED TO DARK GREY SEGMENTS
COM1
CONNECTED TO LIGHT GREY SEGMENTS
SEG4
SEG5
SEG6
SEG7
MAXQ3120
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAXQ3120-FFN+ | 功能描述:IC MCU 32KB FLASH 80-MQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MAXQ® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:260 系列:73S12xx 核心处理器:80515 芯体尺寸:8-位 速度:24MHz 连通性:I²C，智能卡，UART/USART，USB 外围设备:LED，POR，WDT 输入/输出数:9 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:2K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-VFQFN 裸露焊盘 包装:管件 |
| MAXQ3120-KIT | 制造商:Maxim Integrated Products 功能描述:MAXQ3120 EVALUATION KIT - Bulk |
| MAXQ314 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Single-Phase Power-Measurement IC with I2C Interface |
| MAXQ314+ | 功能描述:16位微控制器 - MCU Integrated Circuits (ICs) PMIC - Energy Metering - IC PWR MEASUREMENT 1PH 10-TQFN 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 |
| MAXQ314-KIT | 功能描述:开发板和工具包 - 其他处理器 MAXQ314 Eval Kit RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压: |
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