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参数资料
| 型号： | MAXQ622-KIT# |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 22/35页 |
| 文件大小： | 0K |
| 描述： | EVALUATION KIT FOR MAXQ622 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | MAXQ® |
| 类型： | MCU |
| 适用于相关产品： | MAXQ622 |
| 所含物品： | 2 个板，线缆，CD |
| 相关产品： | MAXQ622X-0000+-ND - IC MCU 16BIT IR MOD BARE DIE MAXQ622G-0000+-ND - IC MCU 16BIT 128KB IR MOD 64LQFP |
| 其它名称： | 90-M6900#KIT |
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29
Maxim Integrated
16-Bit Microcontrollers with
Infrared Module and Optional USB
MAXQ612/MAXQ622
mode to minimize power consumption. This feature is
enabled using the power-fail monitor disable (PFD) bit
in the PWCN register. The reset default state for the PFD
bit is 1, which disables the power-fail monitor function
during stop mode. If power-fail monitoring is disabled
(PFD = 1) during stop mode, the circuitry responsible
for generating a power-fail warning or reset is shut down
and neither condition is detected. Thus, the VDD < VRST
condition does not invoke a reset state. However, in the
event that VDD falls below the POR level, a POR is gen-
erated. The power-fail monitor is enabled prior to stop
mode exit and before code execution begins. If a power-
fail warning condition (VDD < VPFW) is then detected,
the power-fail interrupt flag is set on stop mode exit. If a
power-fail reset condition is detected (VDD < VRST), the
CPU goes into reset.
Power-Fail Warning
The power-fail monitor can assert an interrupt if the volt-
age falls below a configurable threshold between the
operating voltage and the reset voltage. This, if enabled,
can allow the firmware to perform housekeeping tasks if
the voltage level decays below the warning threshold.
The power-fail threshold value should only be changed
when the power-fail warning interrupt is disabled (CKCN.
PFIE = 0) to prevent unintended triggering of the power-
fail warning condition.
The power-fail warning threshold is reset to 1.8V by a
POR and is not affected by other resets. See Table 4.
Power-Fail Detection
Figures 5, 6, and 7 show the power-fail detection and
response during normal and stop-mode operation.
If a reset is caused by a power-fail, the power-fail monitor
can be set to one of the following intervals:
Always on—continuous monitoring
211 nanopower ring oscillator clocks (~256ms)
212 nanopower ring oscillator clocks (~512ms)
213 nanopower ring oscillator clocks (~1.024s)
In the case where the power-fail circuitry is periodically
turned on, the power-fail detection is turned on for two
Table 4. Power-Fail Warning Level Selection
Figure 5. Power-Fail Detection During Normal Operation
A
B
C
D
F
G
H
I
E
VDD
VPFW
VRST
VPOR
INTERNAL RESET
(ACTIVE HIGH)
t
< tPFW
t
≥ tPFW
t
≥ tPFW
t
≥ tPFW
PWCN.PFWARNCN[1:0]
PFW THRESHOLD
(V)
00
1.8
01
1.9
10
2.55
11
2.75
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAXQ622-KIT# | 功能描述:开发板和工具包 - 其他处理器 MAXQ622 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: |
| MAXQ622X-0000+ | 功能描述:16位微控制器 - MCU 16-Bit MCU w/Infrared Module 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 |
| MAXQ622X-UEI+ | 制造商:Maxim Integrated Products 功能描述:MAXQ622 BLANK WLF FW SCRT UEI - Gel-pak, waffle pack, wafer, diced wafer on film |
| MAXQ7665A | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:16-Bit RISC Microcontroller-Based Smart Data-Acquisition Systems |
| MAXQ7665AATM+ | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:16-Bit RISC Microcontroller-Based Smart Data-Acquisition Systems |
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