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BQ20Z80DBTR-V101 Datasheet(PDF) 3 Page - Texas Instruments |
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BQ20Z80DBTR-V101 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 73 page  www.ti.com ABSOLUTE MAXIMUM RATINGS bq20z80-V101 SLUS625D – SEPTEMBER 2004 – REVISED OCTOBER 2005 TERMINAL FUNCTIONS (continued) TERMINAL I/O(1) DESCRIPTION NO. NAME 22 LED3 O LED3 display segment that drives an external LED depending on the firmware configuration 23 LED2 O LED2 display segment that drives an external LED depending on the firmware configuration 24 LED1 O LED1 display segment that drives an external LED depending on the firmware configuration 25 XALERT I Input from bq29312A XALERT output. 26 MRST I Master reset input that forces the device into reset when held high 27 SR2 IA Connections for a small-value sense resistor to monitor the battery charge- and discharge-current flow 28 SR1 IA Connections for a small-value sense resistor to monitor the battery charge- and discharge-current flow 31 VDDA P Positive supply for analog circuitry Analog input connected to the external PLL filter components which are a 150-pF capacitor to VSSA, in 32 FILT IA parallel with a 61.9-k Ω resistor and a 2200-pF capacitor in series. Place these components as close as possible to the bq20z80 to ensure optimal performance. 32.768-kHz crystal oscillator output pin or connected to a 100k, 50ppm or better resistor if the internal 33 XCK2/ROSC O oscillator is used 34 XCK1/VSSA I 32.768-kHz crystal oscillator input pin or connected to VSSA if the internal oscillator is used 35 CLKOUT O 32.768-kHz output for the bq29312. This pin should be directly connected to the AFE. 36 NC - Not used— leave floating 37 NC - Not used— leave floating 11, 19, VSSD P Negative supply for digital circuitry 38 29, 30 VSSA P Negative supply for analog circuitry. over operating free-air temperature range (unless otherwise noted)(1) RANGE VDDAand VDDD relative to VSS(2) Supply voltage range –0.3 V to 4.1 V V(IOD) relative to VSS(2) Open-drain I/O pins –0.3 V to 6 V VI relative to VSS(2) Input voltage range to all other pins –0.3 V to VDDA + 0.3 V TA Operating free-air temperature range –40 °C to 85°C Tstg Storage temperature range – 65 °C to 150°C (1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. (2) VSS refers to the common node of V(SSA) and V(SSD). 3 |
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