SMB139 View Datasheet(PDF) - Summit Microelectronics
Part Name
Description
Manufacturer
SMB139 Datasheet PDF : 27 Pages
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SMB139
CONFIGURATION STATUS REGISTERS
Table 14 – Battery status register – 8-bit (address: 36h) – Volatile (read only)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Charging Status
1
X
X
X
X
X
X
X
Charger has completed at least 1 successful
charge since being enabled
X
1
X
X
X
X
X
X
Charger has completed at least 1 re-charge
cycle since being enabled
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Timeout Status
X
X
0
0
X
X
X
X
No timeouts have occurred
X
X
0
1
X
X
X
X
Pre-charge timeout
X
X
1
0
X
X
X
X
Fast-charge timeout
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Temperature Fault
X
X
X
X
1
X
X
X
Charger paused – temperature fault
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Charging Status
X
X
X
X
X
0
0
X
Idle
X
X
X
X
X
0
1
X
Pre-charging
X
X
X
X
X
1
0
X
Fast-charging
X
X
X
X
X
1
1
X
Taper charging
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Charging Status
X
X
X
X
X
X
X
1
Charger is enabled
Table 15 – Battery fault register – 8-bit (address: 37h) – Volatile (read only)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
1
X
X
X
X
X
X
X
X
1
X
X
X
X
X
X
X
X
1
X
X
X
X
X
X
X
X
1
X
X
X
X
X
X
X
X
1
X
X
X
X
X
X
X
X
1
X
X
X
X
X
X
X
X
1
X
X
X
X
X
X
X
X
1
Note 4: Never Write to Reserved bits.
Fault Output
Battery missing
Charging error
Battery over-voltage condition
Charger over-voltage condition
Charger under-voltage condition
Over-temperature alarm
Under-temperature alarm
Termination Detect Current Threshold has
been hit
Summit Microelectronics, Inc
2121 3.0 6/19/2008
25
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