X3100PT-V XICOR [Xicor Inc.], X3100PT-V Datasheet - Page 8

• Manufacturer Part Number: X3100PT-V
• Description: 3 or 4 Cell Li-Ion Battery Protection and Monitor IC
• Manufacturer: XICOR [Xicor Inc.]

X3100/X3101 – Preliminary Information
REV 1.1.8 12/10/02
CONFIGURATION REGISTER
The X3100 and X3101 can be configured for specific
user requirements using the Configuration Register.
Table 1. Configuration Register Functionality
Table 2. Configuration Register—Upper Byte
Table 3. Configuration Register—Lower Byte
Over-charge Voltage Settings
VOV1 and VOV0 control the cell over-charge level. See
section “Over-charge Protection” on page 13.
Table 4. Over-charge Voltage Threshold Selection
X3100 Default = 30H; X3101 Default = 00H.
VOV1 VOV0 VUV1 VUV0 VOC1 VOC0 VCE1 VCE0
X3100 Default = C0H; X3101 Default = 40H.
Bit(s)
10-11 VOC1-VOC0 Select over-current threshold
12-13
14-15
CELLN
Configuration Register
15
0-5
8-9
6
7
VOV1
7
0
0
1
1
VOV1-VOV0
VCE1-VCE0
VUV1-VUV0
14
SWCEN
CELLN
SWCEN
Name
Bits
–
6
13
VOV0
0
1
0
1
(don’t care)
Switch Cell Charge Enable
threshold function ON/OFF
Set the number of Li-Ion battery
cells used (3 or 4)
Select Cell Charge Enable
threshold
Select over-discharge (under
voltage) threshold
Select over-charge voltage
threshold
12
5
x
4
V
V
V
V
x
11
OV
OV
OV
OV
= 4.20V (Default)
= 4.25V
= 4.30V
= 4.35V
Function
3
x
Operation
10
2
x
9
1
x
www.xicor.com
8
0
x
Over-discharge Settings
VUV1 and VUV0 control the cell over-discharge (under
voltage threshold) level. See section “Over-discharge
Protection” on page 15.
Table 5. Over-discharge Threshold Selection.
Over-current Settings
VOC1 and VOC0 control the pack over-current level.
See section “Over-Current Protection” on page 18.
Table 6. Over-Current Threshold Voltage Selection.
Cell Charge Enable Settings
VCE1, VCE0 and SWCEN control the pack charge
enable function. SWCEN enables or disables a circuit
that prevents charging if the cells are at too low a
voltage. VCE1 and VCE0 select the voltage that is
recognized as too low. See section “Sleep Mode” on
page 15.
Table 7. Cell Charge Enable Function
Configuration Register Bits
VUV1
Configuration
Register Bits
Configuration
0
0
1
1
VOC1
Register Bit
0
0
1
1
SWCEN
0
1
VUV0
0
1
0
1
Characteristics subject to change without notice.
VOC0
(X3100 default)
0
1
0
1
Charge enable function: ON
Charge enable function: OFF
V
V
V
V
UV
UV
UV
UV
X3100
=1.95V
=2.05V
=2.15V
=2.25V
Operation
V
Operation
OC
=0.075V (Default)
V
V
V
Operation
OC
OC
OC
(X3101 default)
V
V
V
V
=0.100V
=0.125V
=0.150V
UV
UV
UV
UV
X3101
=2.25V
=2.35V
=2.45V
=2.55V
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