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BQ26220PW Datasheet(PDF) 11 Page - Texas Instruments |
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BQ26220PW Datasheet(HTML) 11 Page - Texas Instruments |
11 / 19 page bq26220 SLUS521B − AUGUST 2002 − REVISED FEBRUARY 2004 11 www.ti.com APPLICATION INFORMATION register interface Information is exchanged between host system and the bq26220 through the data-register interface. See Table 4 below. The register set consists of a 122-location address space of 8-bit bytes segmented into • 8 bytes of factory programmed ID ROM • 32 bytes of flash shadowed RAM • 64 bytes of general purpose flash • 18 special function registers Table 4. Memory Map HDQ ADDRESS NAME BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0 0x78−0x7F IDROM 8 bytes of factory-programmed ROM and gain correction factor for BATH and BATL 0x73−0x77 − Reserved 0x72 BATH BV−SIGN BVOS3 BVOS2 BVOS1 BVOS0 Battery voltage (bits 8 through 10) 0x71 BATL Battery voltage (bits 0 through 7) 0x70 FPA Flash program address byte 0x6F FPD Flash program data byte 0x6E DCRH Discharge count register-high byte 0x6D DCRL Discharge count register-low byte 0x6C CCRH Charge count register-high byte 0x6B CCRL Charge count register-low byte 0x6A SCRH Self-discharge count register-high byte 0x69 SCRL Self−discharge count register-low byte 0x68 DTCH Discharge timer counter register-high byte 0x67 DTCL Discharge timer count register-low byte 0x66 CTCH Charge timer counter register-high byte 0x65 CTCL Charge timer counter register-low byte 0x64 MODE GPIEN STAT STC STD WOE2 WOE1 WOE0 POR 0x63 CLR RSVD RSVD RSVD CTC DTC SCR CCR DCR 0x62 FCMD Flash/control command register 0x61 TEMPH Temperature-high byte (bits 0 through 2 only, other bits are reserved) 0x60 TEMPL Temperature-low byte 0x40−0x5F Flash Page 2, 32 bytes of flash 0x20−0x3F Flash Page 1, 32 bytes of flash 0x00−0x1F RAM/flash Page 0, 32 bytes of flash shadowed RAM |
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