BQ33100_15 Datasheet, PDF (39/67 Pages) Texas Instruments – Super Capacitor Manager

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SBS
CMD
0x60
MODE
R/W
NAME
UnSealKey
bq33100
SLUS987B – JANUARY 2011 – REVISED DECEMBER 2015
Table 60. UnSealKey
FORMAT
Hex
SIZE IN
BYTES
4
MIN VALUE
0x00000000
MAX VALUE
0xffffffff
DEFAULT
VALUE
—
UNIT
8.5.2.2.12.7 ManufacturerInfo(0x70)
This read and write block function returns the data stored in Manuf. Info where byte 0 is the MSB with a
maximum length of 31 data + 1 length byte. When the bq33100 is in Unsealed mode, this block is read and write.
When the bq33100 is in Sealed mode, this block is read only.
SBS
CMD
0x70
MODE
R/W
NAME
ManufacturerInfo
Table 61. ManufacturerInfo
FORMAT
String
SIZE IN
BYTES
31+1
MIN VALUE
—
MAX VALUE
—
DEFAULT
VALUE
—
UNIT
8.5.3 Data Flash
NOTE
Take care when mass programming the data flash space using previous versions of data
flash memory map files (such as *.gg files) to make sure that all public locations are
updated correctly.
Data Flash can only be updated if Voltage ≥ Flash Update OK Voltage. Data flash reads and writes are verified
according to the method detailed in the Data Flash Fault (DFF) section of this data sheet.
8.5.3.1 Accessing Data Flash
In different security modes, the data flash access conditions change. See Security (Enables and Disables
Features) and ManufacturerAccess (0x00) sections for further details.
8.5.3.2 Data Flash Interface
The bq33100 data flash is organized into subclasses where each data flash variable is assigned an offset within
its numbered subclass. For example: the OT Time location is defined as:
• Class = Safety
• SubClass = Temperature = 2
• Offset = 2
NOTE
Data Flash commands are NACKed if the bq33100 is in sealed mode ([SS] flag is set).
Each subclass can be addressed individually by using the DataFlashSubClassID (0x77) command and the data
within each subclass is accessed by using the DataFlashSubClassPage1..8 (0x78...0x7f) commands. Reading
and Writing subclass data are block operations which are each 32 Bytes long. Data can be written in shorter
block sizes, however. The final block in one subclass can be shorter than 32 bytes so take care not to write over
the subclass boundary. None of the values written are bounded by the bq33100 and the values are not rejected
by the bq33100. Writing an incorrect value may result in hardware failure due to firmware program interpretation
of the invalid data. The data written is persistent, so a Power On Reset does resolve the fault.
8.5.3.3 Data Flash Summary
The following notation is used in Table 62 with regards to the Data Type column:
The Alpha Character
• H = Hexadecimal value
• I = Integer value
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