fs3862 Fortune Semiconductor Corporation, fs3862 Datasheet - Page 18

• Manufacturer Part Number: fs3862
• Description: 8-bit Mcu With 1k Program Eprom, 64-byte Sram, 5-bit I/o Port, Intelligent Charger Management Controller
• Manufacturer: Fortune Semiconductor Corporation

Rev. 1.3
9.8
Address Name
08H
09H
0CH
parameters (such as the battery voltage, sensed charged current, battery temperature, etc.) and the pre-set
current or voltage values selected by the comparator select CMPPSEL[4:0] (ADDRESS 0CH).
current across the sense resistor Rsns with selecting the desired measured item by setting the CMPNSEL[2:0])
match exactly with the positive input of the selected reference value.
when VCC > VBAT. If there is no VCC and only the VBAT of battery is connected, then the VDDIN is set
inactive low.
The comparator enable bit enables the internal comparator for comparison between the measured input
Also refer to ENCMP (ADDRESS 08H) and CMPOUT (ADDRESS 09H) register bits.
Enable ENCMP can be constant current and voltage regulation reference current.
The bit CMPOUT is the compared output and would be set high on comparator’s measured input value (like
The VDDIN status indicator (Read Only) of supply voltage VCC greater than VBAT, i.e. VDDIN is set high
CMPNSEL[2:0] select comparator negative input.
Comparator
CMPNSEL [2:0]
TS
VBATID
VBAT
SNS
Select
POWER
RESULT
CMPSEL
The voltage of external thermistor, with either PTC (positive temperature) or NTC (negative
temperature) coefficient, and is compared with VPWM for temperature measurements and
subsequent control actions.
The voltage of external Battery ID, and is compared with VPWM for determining the battery’s
types before charges.
Battery voltage and will be compared with 2.5V, 2.6V, 3.0V, 3.9V,….4.25V, 4.3V, also shown
on the voltage regulations.
The current sensing voltage and will be compared with the 50mA, 100mA, 150mA to
determine the termination current.
Content ( u mean unknown or unchanged)
000
TS
CMPNSEL[2:0]
VBATID
001
VBAT
010
SNS
011
ICTEMP
CMPOUT
100
ENCMP
CMPPSEL [4:0]
Reserved
101
Reserved
110
VDDIN
Reserved
111
Reset
State
0uuu0uuu
uuuu0uu0
00000000
FS3862
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