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參數(shù)資料
| 型號(hào)： | MAXQ3120-FFN+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 19/33頁 |
| 文件大小： | 0K |
| 描述： | IC MCU 32KB FLASH 80-MQFP |
| 標(biāo)準(zhǔn)包裝： | 66 |
| 系列： | MAXQ® |
| 核心處理器： | RISC |
| 芯體尺寸： | 16-位 |
| 速度： | 8MHz |
| 連通性： | UART/USART |
| 外圍設(shè)備： | LCD，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲(chǔ)器容量： | 32KB（16K x 16） |
| 程序存儲(chǔ)器類型： | 閃存 |
| RAM 容量： | 512 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.8 V ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 2x16b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 80-BQFP |
| 包裝： | 托盤 |
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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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAXQ3120-FFN+ | 功能描述:IC MCU 32KB FLASH 80-MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MAXQ® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:260 系列:73S12xx 核心處理器:80515 芯體尺寸:8-位 速度:24MHz 連通性:I²C，智能卡，UART/USART，USB 外圍設(shè)備:LED，POR，WDT 輸入/輸出數(shù):9 程序存儲(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:2K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-VFQFN 裸露焊盤 包裝:管件 |
| MAXQ3120-KIT | 制造商:Maxim Integrated Products 功能描述:MAXQ3120 EVALUATION KIT - Bulk |
| MAXQ314 | 制造商:MAXIM 制造商全稱: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 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT |
| MAXQ314-KIT | 功能描述:開發(fā)板和工具包 - 其他處理器 MAXQ314 Eval Kit RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
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