ISL9217 Intersil Corporation, ISL9217 Datasheet - Page 19

• Manufacturer Part Number: ISL9217
• Description: (ISL9216 / ISL9217) 8 to 12 Cell Li-Ion Battery Overcurrent Protection and Analog Front End Chip Set
• Manufacturer: Intersil Corporation

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OCCV1
OCCT1
BIT
Bit 7
Bit 6
Bit 4
Bit 3
Bit 2
Bit 1
7
6
5
4
3
2
1
0
0
0
1
1
0
0
1
1
ATMPOFF
Turn off automatic external temp scan
(ISL9216 only)
DIS3
Disable 3.3V reg
TMP3ON
Temp 3.3V keep on
DISXTSD
Disable external thermal shutdown
(ISL9216 only)
DISITSD
Disable internal thermal shutdown
POR
Force POR
DISWKUP
Disable WKUP pin
WKPOL
Wake-up Polarity
DENOCC
Turn off automatic OCC control
(ISL9216 only)
Bit 5
OCCV0
0
1
0
1
SCLONG
Short circuit long delay
(ISL9216 only)
CTDIV
Divide charge time by 32
(ISL9216 only)
DTDIV
Divide discharge time by 64
(ISL9216 only)
Bit 0
OCCT0
0
1
0
1
SETTING
FUNCTION
19
TABLE 8. CHARGE/TIME SCALE CONFIGURATION REGISTER (ADDR: 06H)
TABLE 9. FEATURE SET CONFIGURATION REGISTER (ADDR: 07H)
When set to ‘1’ this bit disables the automatic temperature scan. When set to ‘0’, the temperature
is turned on for 5ms in every 640ms.
Setting this bit to “1” disables the internal 3.3V regulator. Setting this bit to “1” requires that there
be an external 3.3V regulator connected to the RGO pin.
Setting this bit to “1” keeps ON the 3.3V output to the external temperature sensor.
Setting this bit to “1” disables the automatic shutdown of the cell balance and power FETs in
response to an out of limit external temperature. While the automatic response is disabled, the
microcontroller can initiate a shutdown based on the XOT flag.
Setting this bit to “1” disables the automatic shutdown of the cell balance and power FETs in
response to an out of limit internal temperature. While the automatic response is disabled, the
microcontroller can initiate a shutdown based on the IOT flag.
Setting this bit to “1” forces a POR condition. This resets all internal registers to zero.
Setting this bit to “1” disables the WKUP pin function.
CAUTION: Setting this pin to ‘1’ prevents a wake-up condition. If the device then goes to sleep, it
cannot be waken without a communication link that resets this bit, or by power cycling the device.
Setting this bit to “1” sets the device to wake-up on a rising edge at the WKUP pin.
Setting this bit to “0” sets the device to wake-up on a falling edge at the WKUP pin.
CAUTION: Setting this pin to ‘1’ in the ISL9217 prevents a wake-up condition. If the device then
goes to sleep, it cannot be waken without power cycling the device.
When set to ‘0’, a charge overcurrent condition automatically turns off the FETs.
When set to ‘1’, a charge overcurrent condition will not automatically turn off the FETs.
In either case, this condition sets the COC bit, which also turns on the TEMP3V output.
Charge Overcurrent Threshold
(ISL9216 only)
V
V
V
V
When this bit is set to ‘0’, a short circuit needs to be in effect for 100µs before a shutdown
begins. When this bit is set to ‘1’. a short circuit needs to be in effect for 10ms before a
shutdown begins.
When set to “1”, the charge overcurrent delay time is divided by 32.
When set to “1”, the discharge overcurrent delay time is divided by 64.
Charge Overcurrent Time-out
(ISL9216 only)
t
t
t
t
OCC
OCC
OCC
OCC
OCD
OCD
OCD
OCD
ISL9216, ISL9217
= 80ms (2.5ms if CTDIV=1)
= 160ms (4ms if CTDIV=1)
= 320ms (8ms if CTDIV=1)
= 640ms (16ms if CTDIV=1)
= 0.10V
= 0.12V
= 0.14V
= 0.16V
DESCRIPTION
FUNCTION
November 2, 2007
FN6488.1