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BQ8015 Datasheet(PDF) 2 Page - Texas Instruments |
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BQ8015 Datasheet(HTML) 2 Page - Texas Instruments |
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2 / 50 page  bq8015 SLUS522A – JANUARY 2002 – REVISED SEPTEMBER 2002 2 www.ti.com Terminal Functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION DSCM 27 IA Analog input pin connected to the internal coulomb-counter peripheral for integrating a small voltage between DSCP and DSCM. DSCM can also be selected as an input to the over-sampled ADC. DSCP 28 IA Analog input pin connected to the internal coulomb-counter peripheral for integrating a small voltage between DSCP and DSCM. DSCP can also be selected as an input to the over-sampled ADC. FILT 32 IA Analog pin connected to the external PLL loop filter components MRST 26 I Master reset input pin that forces the device into reset when held high. Must be held low for normal operation. RA0 6 I/OD Port A.0 digital open-drain I/O pin RA1/VOUT 7 I/O Port A.1 digital push-pull I/O pin with pullup capable of driving power for an external device RA2 10 I/OD Port A.2 digital open-drain I/O pin RA3 12 I/OD Port A.3 digital open-drain I/O pin RA4 13 I/OD Port A.4 digital open-drain I/O pin RA5/HDQ 14 I/OD Port A.5 digital open-drain I/O pin or one-wire DQ/HDQ serial communication pin RA6/SMBC 15 I/OD Port A.6 digital open-drain I/O pin or SMBus clock pin RA7/SMBD 16 I/OD Port A.7 digital open-drain I/O pin or SMBus data pin RB 9 P RAM backup pin to provide backup potential to the internal DATA RAM if VCC is momentarily shorted, by using a capacitor attached between RB and VSS RB0/INT 17 I/OD Port B.0 digital open-drain I/O pin or selectable as a configurable external processor interrupt RB1/EV 18 I/OD Port B.1 digital open-drain I/O pin or selectable as a configurable external event input to wake the controller from a halt state RB2 20 I/OD Port B.2 digital open-drain I/O pin RB3 21 I/OD Port B.3 digital open-drain I/O pin RB4 22 I/OD Port B.4 digital open-drain I/O pin RB5 23 I/OD Port B.5 digital open-drain I/O pin RB6 24 I/OD Port B.6 digital open-drain I/O pin RB7 25 I/OD Port B.7 digital open-drain I/O pin RC0/AD0 1 I/O Port C.0 digital push-pull I/O pin or selectable as an input, AD0, to the over-sampled ADC RC1/AD1 2 I/O Port C.1 digital push-pull I/O pin or selectable as an input, AD1, to the over-sampled ADC RC2/AD2 3 I/O Port C.2 digital push-pull I/O pin or selectable as an input, AD2, to the over-sampled ADC RC3/AD3 4 I/O Port C.3 digital push-pull I/O pin or selectable as an input, AD3, to the over-sampled ADC RC4/AD4 5 I/O Port C.4 digital push-pull I/O pin or selectable as an input, AD4, to the over-sampled ADC RC5/AD5/CLK 35 I/O Port C.5 digital push-pull I/O pin or selectable as an input, AD5, to the over-sampled ADC or a 32-kHz square-wave output RC6/AD6 36 I/O Port C.6 digital push-pull I/O pin or selectable as an input, AD6, to the over-sampled ADC RC7/AD7 37 I/O Port C.7 digital push-pull I/O pin or selectable as an input, AD7, to the over-sampled ADC ROSC 33 IA Internal oscillator bias resistor input pin VDDA 31 P Positive supply for analog circuitry. VDDA and VDDD must be driven to the same potential. VDDD 8 P Positive supply for digital circuitry and I/O pins. VDDD and VDDA must be driven to the same potential. VSSA 30, 34 P Negative supply for analog circuitry. VSSA, VSSD, and VSSP must be driven to the same potential. VSSD 11, 29 P Negative supply for digital circuitry. VSSA, VSSD, and VSSP must be driven to the same potential. VSSP 19, 38 P Negative supply for output circuitry. VSSA, VSSD, and VSSP must be driven to the same potential. NOTE: I = Input, IA = Analog input, I/O = Input/output, I/OD = Input/Open-drain output, O = Output, OA = Analog output, P = power |
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