Samsung C8274X Manuel D’Utilisation

The bit 3 of BLDCON controls to run or disable the operation of Battery Level Detector. Basically this V

BLD

 is set 

as 2.2V by system reset and it can be changed in 3 kinds voltages by selecting Battery Level Detector Control 
Register (BLDCON). When you write 3-bit data value to BLDCON, an established resistor string is selected and 
the V

BLD

 is fixed in accordance with this resistor. Table 15-1 shows specific V

BLD

 of 3 levels.   

Battery Level Detector Control Register

F4H, Set 1, Bank 1, R/W, Reset : 00H

.7

.6

.5

.4

.3

.2

.1

.0

MSB

LSB

Not used

 +

   Comparator

Mux

BANDGAP

BLD Enable/Disable

BLD 

OUT

Bias

V

REF

V

IN

R

BLD

V

BLDREF

Resistor String

P2CONL.1-.0

V

BAT

NOTES:
1.    The reset value of BLDCON is #00H.
2.    V

REF

 is about 1 volt.

f

BLD

 

−.0 

0   0   0 

2.2 V 

1   0   1 

2.4 V 

0   1   1 

2.8 V 

Other values 

Not available