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BQ26100 Datasheet(PDF) 9 Page - Texas Instruments |
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BQ26100 Datasheet(HTML) 9 Page - Texas Instruments |
9 / 22 page www.ti.com MEMORY DESCRIPTIONS Non-Volatile OTP Memory A = A +1 ROM Function Flow Master TX: 16-bitaddress, A MasterRX: CRCofM/Fcmd& A MasterRX: D MasterRX: 8-bitdata@ A A =0x007F? YES Read Memory Flow M/F=0xF0 NO A = A +1 A <0x007F? YES NO ROM Function Flow Master TX: ProgrammingPulse MasterRX: CRCofalldatatransmitted MasterRX: CRCofpreloaded A[7:0]&shiftedD YES Write Memory Flow M/F=0x0F NO A <0x007F? NO ROM Function Flow Master TX: 16-bitaddress, A MasterRX: CRCofM/Fcmd& A MasterRX: 8-bitdata@ A A[4:0]=Last addressofpage YES Read Page Flow M/F=0xC3 Master TX: 16-bitaddress, A A = A +1 MasterRX: CRCofalldatatransmitted MasterRX: CRCofM/Fcmd, A &D Master TX: 8-bitdata,D Master TX: 8-bitdata,D CRC= A[7:0] (1) (1) (1) bq26100 SLUS696 – JUNE 2006 The bq26100 has a memory and command structure that is compatible with the bq2022, however additional memory and commands have been added. The bq26100 uses a combination of non-volatile One-Time-Programmable (OTP), non-volatile EEPROM, and volatile registers. The memory is split into the following sections: The One Time Programmable (OTP) memory is intended for factory programming. Programming the OTP requires putting a 7-V pulse on the communication pin after writing the data to the intended address. General Use – Memory Function Commands 0xF0 (Read) and 0x0F (Write) The general use space is erased to read 0x00. Data written to the general space is ORed with data already present at the address to be written. A bit can only be flipped from 0 to 1. Table 1. General Memory Space Addressing ADDRESSES FUNCTION 0x007F – 0x0060 Page 3 – 32 bytes general use 0x005F – 0x0040 Page 2 – 32 bytes general use 0x003F – 0x0020 Page 1 – 32 bytes general use 0x001F – 0x0000 Page 0 – 32 bytes general use (1) 16-Bit address is sent with lower 8-bit address followed by higher 8-bit address with least significant bit first. Figure 6. General Memory OTP Write/Read Flows 9 Submit Documentation Feedback |
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