ISL94201IRZ Intersil, ISL94201IRZ Datasheet - Page 16

• Manufacturer Part Number: ISL94201IRZ
• Description: IC MULTI LI-ION AFE 24-QFN
• Manufacturer: Intersil

Specifications of ISL94201IRZ

• Function: Over/Under Voltage Protection
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 5 V ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register Protection
The Feature Set configuration register is write protected on
initial power up. In order to write to these registers it is
necessary to set a bit to enable each one. These write
enable bits are in the Write Enable register (Address 08H).
Write the FSETEN bit (Addr 8:bit 7) to “1” to enable changes
to the data in the Feature Set register (Address 7).
TEMPERATURE MONITOR CIRCUITS ARE
LOGIC AND REGISTERS ARE POWERED
MONITORING CIRCUITS ARE AWAITING
VOLTAGE AND TEMPERATURE
VOLTAGE REGULATOR IS ON
MAIN OPERATING STATE
EXTERNAL CONTROL.
ACTIVE (DEFAULT).
BY RGO
POWER FAILS AND ONE OR MORE OF THE SUPPLIES, VCC, V
16
AND V
CELL3
FIGURE 11. DEVICE OPERATION STATE MACHINE
DISABLED. ALL REGISTERS SET TO DEFAULT
DO NOT MEET MINIMUM VOLTAGE REQUIREMENTS
I
I
2
2
C INTERFACE IS ENABLED. BIASING IS
C INTERFACE IS DISABLED. BIASING IS
ENABLED. VOLTAGE REGULATOR IS
WKUP goes above or below
threshold (edge triggered).
Or, SLEEP bit is set to ‘0’
SLEEP bit is set to ‘1’
POWER DOWN STATE
POWER UP STATE
ISL94201
VALUES (ALL “0”)
ENABLED.
Power is applied and all of the supplies, VCC, V
The microcontroller can reset this bits back to zero to
prevent inadvertent writes that change the operation of the
pack.
Operation State Machine
Figure 11 shows a device state machine which defines how
the ISL94201responds to various conditions.
and V
CELL3
OPERATE WITH THE EXTERNAL DEVICE.)
meet minimum voltage requirements
LOGIC AND REGISTERS ARE POWERED
VCELL1 VOLTAGE IS HIGH ENOUGH TO
I
2
MONITORING CIRCUITS ARE OFF.
C COMMUNICATION IS ACTIVE (IF
CELL1
VOLTAGE AND TEMPERATURE
VOLTAGE REGULATOR IS OFF
, V
BIASING IS OFF
SLEEP STATE
CELL2
BY V
CELL1
,
CELL1
, V
CELL2
July 3, 2008
,
FN6719.0