參數(shù)資料
型號(hào)： MAXQ3120-FFN+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 14/33頁(yè)
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
MAXQ3120
High-Precision ADC
Mixed-Signal Microcontroller
____________________________________________________________________
21
System Timing
The MAXQ3120 generates its internal system clock
from an external high-frequency crystal. Because the
MAXQ3120 includes internal capacitors for this pur-
pose, no external capacitors are required to use the
high-frequency crystal. The MAXQ3120 should not be
driven directly by an external clock source.
A crystal warmup counter enhances operational relia-
bility. Each time the external crystal oscillation must
restart, such as after exiting stop mode, the device initi-
ates a crystal warmup period of 65,536 oscillations.
This allows time for the crystal amplitude and frequency
to stabilize before using it as a clock source.
Power Management
Advanced power-management features minimize power
consumption by dynamically matching the processing
speed of the device to the required performance level.
This means device operation can be slowed and power
consumption minimized during periods of reduced
activity. When more processing power is required, the
microcontroller can increase its operating frequency.
Software-selectable clock-divide operations allow flexi-
bility, selecting whether a system clock cycle is 1, 2, 4,
or 8 oscillator cycles. By performing this function in soft-
ware, a lower power state can be entered without the
cost of additional hardware.
For extremely power-sensitive applications, two addi-
tional low-power modes are available.
Divide-by-256 power-management mode (PMM)
(PMME = 1, CD1:0 = 00b)
Stop mode (STOP = 1)
In PMM, one system clock is 256 oscillator cycles, signifi-
cantly reducing power consumption while the microcon-
troller functions at reduced speed. The optional
switchback feature allows enabled interrupt sources,
such as the external interrupts and USARTs, to cause the
processor to quickly exit PMM mode and return to a
faster internal clock rate.
Figure 2. Clock Sources
MAXQ3120
GLITCH-FREE
MUX
DIV
1
DIV
2
DIV
4
DIV
8
PMM
CLOCK
DIVIDER
SELECTOR
DEFAULT
WATCHDOG
TIMER
RESET DOG
RWT
RESET
POWER-ON
RESET
STOP
POWER-ON
RESET
SWB
INTERRUPT/SERIAL PORT
RESET
STOP
POWER MONITOR
REAL-TIME CLOCK
LCD CONTROLLER
WATCHDOG RESET
CLOCK
GENERATION
SYSTEM CLOCK
ENABLE
WATCHDOG INTERRUPT
32kHz
CRYSTAL
MONITOR
ENABLE
INPUT
HF
CRYSTAL
CRYSTAL KILL
XDOG
STARTUP
TIMER
CLK INPUT
RESET
XDOG COUNT
XDOG DONE
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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
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