X3100 Xicor, X3100 Datasheet - Page 28

• Manufacturer Part Number: X3100
• Description: 3 or 4 Cell Li-Ion Battery Protection and Monitor IC
• Manufacturer: Xicor

X3100/X3101 – Preliminary Information
REV 1.1.8 12/10/02
Read Status Register (RDSTAT)
The Read Status Register (RDSTAT) command returns
the status of the X3100 or X3101. The Status Register
contains three bits that indicate whether the voltage
regulator is stabilized, and if there are any protection
failure conditions. The operation of the RDSTAT
instruction is shown in Figure 18.
Figure 18. Read Status Register (RDSTAT) Operation Sequence
Figure 19. EEPROM IDLock (SET IDL) Operation Sequence
SCK
CS
SO
SI
SCK
CS
SO
SI
High Impedance
High Impedance
0
1
0
Instruction
2
RDSTAT
1
(1 Byte)
3
2
4
Instruction
3
Set IDL
5
4
6
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5
7
6
8
Status Register Output
7
9
Set ID Lock (SET IDL)
The contents of the EEPROM memory array in the
X3100 or X3101 can be locked in one of eight
configurations using the SET ID lock command. When a
section of the EEPROM array is locked, the contents
cannot be changed, even when a valid write operation
attempts a write to that area. The SET IDL command
operation is shown in Figure 19.
8
10 11 12 13 14 15
9
10 11 12 13 14 15
IDLock
Byte
2
1
Characteristics subject to change without notice.
D
L
2
I
0
D
L
1
I
D
L
0
I
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