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ATtiny167-ESSZ датащи(PDF) 247 Page - ATMEL Corporation |
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ATtiny167-ESSZ датащи(HTML) 247 Page - ATMEL Corporation |
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247 / 282 page ![]() 247 7728D–AVR–07/09 ATtiny87/ATtiny167 Notes: 1. V BOT may be below nominal minimum operating voltage for some devices. For devices where this is the case, the device is tested down to Vcc = V BOT during the production test. This guarantees that a Brown-Out Reset will occur before Vcc drops to a voltage where cor- rect operation of the microcontroller is no longer guaranteed. The test is performed using BODLEVEL = 101 for Low Operating Voltage and BODLEVEL = 100 for High operating Voltage. 22.6 Internal Voltage Characteristics Table 22-5. BODLEVEL Fuse Coding BODLEVEL 2:0 Fuses Min. VBOT (1) Typ. VBOT Max. VBOT Units 1 1 1 b BOD Disabled 1 1 0 b 1.7 1.8 2.0 V 1 0 1 b 2.5 2.7 2.9 1 0 0 b 4.1 4.3 4.5 0 1 1 b Reserved 0 1 0 b 0 0 1 b 0 0 0 b Table 22-6. Brown-out Characteristics Symbol Parameter Min. Typ. Max. Units VHYST Brown-out Detector Hysteresis 80 mV t BOD Min Pulse Width on Brown-out Reset 2 µs Table 22-7. Internal Voltage Reference Characteristics Symbol Parameter Condition Min. Typ. Max. Units VBG Bandgap reference voltage Vcc = 4.5 T A =25°C 1.0 1.1 1.2 V t BG Bandgap reference start-up time Vcc = 4.5 TA =25°C 40 70 µs IBG Bandgap reference current consumption Vcc = 4.5 TA =25°C 10 µA |
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