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BQ78350DBT-R1 データシート(PDF) 7 Page - Texas Instruments |
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BQ78350DBT-R1 データシート(HTML) 7 Page - Texas Instruments |
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7 / 32 page  bq78350-R1 www.ti.com SLUSCD0 – AUGUST 2015 8.8 Electrical Characteristics: Power-On Reset VCC = 2.4 V to 2.6 V, TA = –40°C to 85°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIT– Negative-going voltage input 1.7 1.8 1.9 V VHYS Power-on reset hysteresis 50 125 200 mV 8.9 Electrical Characteristics: Oscillator VCC = 2.4 V to 2.6 V, TA = –40°C to 85°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT f(OSC) Operating frequency 4.194 MHz –3% 0.25% 3% f(EIO) Frequency error(1)(2) TA = 20°C to 70°C –2 0.25 2 t(SXO) Start-up time(3) 2.5 5 ms LOW FREQUENCY OSCILLATOR f(LOSC) Operating frequency 32.768 kHz –2.5% 0.25% 2.5% f(LEIO) Frequency error(2)(4) TA = 20°C to 70°C –1.5 0.25 1.5 t(LSXO) Start-up time(5) 500 ms (1) The frequency error is measured from 4.194 MHz. (2) The frequency drift is included and measured from the trimmed frequency at VCC = 2.5 V, TA = 25°C. (3) The start-up time is defined as the time it takes for the oscillator output frequency to be within 1% of the specified frequency. (4) The frequency error is measured from 32.768 kHz. (5) The start-up time is defined as the time it takes for the oscillator output frequency to be ±3%. 8.10 Electrical Characteristics: Data Flash Memory VCC = 2.4 V to 2.6 V, TA = –40°C to 85°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Data retention See note(1) 10 Years tDR Flash programming write-cycles See note(1) 20,000 Cycles t(WORDPROG) Word programming time See note(1) 2 ms I(DDdPROG) Flash-write supply current See note(1) 5 10 mA (1) Specified by design. Not production tested. 8.11 Electrical Characteristics: Register Backup VCC = 2.4 V to 2.6 V, TA = –40°C to 85°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT V(RB) > V(RBMIN), VCC < VIT– 1500 nA RB data-retention input I(RB) V(RB) > V(RBMIN), VCC < VIT–, TA = 0°C current 40 160 to 50°C RB data-retention V(RB) 1.7 V voltage (1) 8.12 SMBus Timing Specifications VCC = 2.4 V to 2.6 V, TA = –40°C to 85°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN NOM MAX UNIT SMBus operating fSMB SLAVE mode, SMBC 50% duty cycle 10 100 kHz frequency SMBus master clock MASTER mode, no clock low slave fMAS 51.2 kHz frequency extend Bus free time between tBUF 4.7 µs start and stop Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: bq78350-R1 |
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