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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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NRF51822-CTACAC-R датащи(PDF) 40 Page - Nordic Semiconductor |
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NRF51822-CTACAC-R датащи(HTML) 40 Page - Nordic Semiconductor |
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40 / 130 page  Page 40 nRF51822 Product Specification v3.3 8 Electrical specifications This chapter contains electrical specifications for device interfaces and peripherals including radio parameters and current consumption. The test levels referenced are defined in Table 21. Table 21 Test level definitions 8.1 Clock sources 8.1.1 16/32 MHz crystal startup Figure 9 Current drawn at oscillator startup Figure 9 shows the current drawn by the crystal oscillator (XOSC) at startup. The tSTART,XOSC period is the time needed for the oscillator to start clocking. The length of tSTART,XOSC is dependent on the crystal specifications. The period following tSTART,XOSC to the end of tSTART,X16M /tSTART,X32M is fixed. This is the debounce period where the clock stabilizes before it is made available to rest of the system. Test level Description 1 Simulated, calculated, by design (specification limit) or prototype samples tested at NOC. 2 Parameters have been verified at Test level 1 and in addition: Prototype samples tested at EOC. 3 Parameters have been verified at Test level 2 and in addition: Production samples tested at EOC in accordance with JEDEC47. 4 Parameters have been verified at Test level 3 and in addition: Production devices are limit tested at NOC. tSTART,XOSC tSTART,X16M / tSTART,X32M ISTART,XOSC |
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