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products:w7500:overview:powersupply

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products:w7500:overview:powersupply [2015/04/21 08:34]
hjjeon0608 created
products:w7500:overview:powersupply [2015/05/12 09:17] (current)
lawrence
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 W7500 embeds a voltage regulator in order to supply the internal 1.5V digital power domain. W7500 embeds a voltage regulator in order to supply the internal 1.5V digital power domain.
  
-- Require a 2.7V ~ 5.5V operating supply voltage (VDD)+- Require a 2.7V ~ 5.5V operating supply voltage (VDD)
 - ADC ref voltage is same as VDD - ADC ref voltage is same as VDD
  
 ## Voltage regulator ​ ## Voltage regulator ​
  
-The voltage regulator is always enabled after Reset. It works on in one mode.+The voltage regulator is always enabled after Reset and works on in only one mode.
  
 - In Run mode, the regulator supplies full power to the 1.5V domain. - In Run mode, the regulator supplies full power to the 1.5V domain.
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 ![](http://​wizwiki.net/​wiki/​lib/​exe/​fetch.php?​media=products:​w7500:​por_reset_waveform.jpg "​Figure 1 POR reset waveform"​) ![](http://​wizwiki.net/​wiki/​lib/​exe/​fetch.php?​media=products:​w7500:​por_reset_waveform.jpg "​Figure 1 POR reset waveform"​)
  
-##Low-power modes +##Low power modes 
-After a system or power Reset, ​W7500 is in RUN mode. There are two low power modes to save power when CPU does not need to kept running. ​For example ​when CPU waiting for an external ​eventUser can enter the low power mode. And W7500 don’t have power-off mode.+W7500 is in RUN mode after a system or power reset. There are two low power modes to save power when the CPU does not need to be kept running. ​These modes are useful for instances like when the CPU is waiting for an external ​interruptPlease note that there is no power-off mode for W7500.
  
-The device features two low-power modes:+The device features two low power modes:
  
-sleep mode+Sleep mode
 - Deep Sleep mode - Deep Sleep mode
  
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 - User can slow down the system clocks - User can slow down the system clocks
-- User can gate the clocks to the peripherals ​when they are unused.+- User can block the clocks to the peripherals ​while they are unused.
  
-###Sleep mode+###​Sleep ​mode vs. Deep sleep mode
  
-W7500 have two kinds of sleep modes. One is Sleep mode and the other is Deep sleep mode. +W7500 has two kinds of sleep modes. One is Sleep mode and the other is Deep sleep mode. 
-Two of them are almost same except the clock gated peripherals kinds. ​Table 2 shows the Sleep mode summary+Two of them are almost ​the same except the clock gated peripherals kinds. ​
  
 <​table>​ <​table>​
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 - UART0, UART1 clock (UARTCLK) - UART0, UART1 clock (UARTCLK)
 - Two Timer clocks (TIMCLK0, TIMCLK1) - Two Timer clocks (TIMCLK0, TIMCLK1)
-8ea PWM clocks (PWMCLK0 ~ PWMCLK7+PWM clocks (PWMCLK0 ~ PWMCLK7)
-- Real time clock (RTCCLK)+
 - WDOG clock (WDOGCLK) - WDOG clock (WDOGCLK)
 - Random number generator clock (RNGCLK) - Random number generator clock (RNGCLK)
  
 </​markdown>​ </​markdown>​
products/w7500/overview/powersupply.1429572861.txt.gz · Last modified: 2015/04/21 08:34 by hjjeon0608