Atmega4hvd/8hvd – Rainbow Electronics ATmega8HVD User Manual
Page 112
112
8052B–AVR–09/08
ATmega4HVD/8HVD
20.8.6
BPDOCD – Battery Protection Discharge-Over-current Detection Level Register
• Bits 7:0 – DOCDL7:0: Discharge Over-current Detection Level
These bits sets the R
SENSE
voltage level for detection of Discharge Over-current, as defined in
Table 20-4 on page 112
. This register should always be written as one-hot.
Note:
Due to synchronization of parameters between clock domains, a guard time of 3 ULP oscillator
cycles + 3 CPU clock cycles is required between each time the BPDOCD register is written. Any
writing to the BPDOCD register during this period will be ignored.
20.8.7
BPCOCD – Battery Protection Charge-Over-current Detection Level Register
• Bits 7:0 –COCDL7:0: Charge Over-current Detection Level
These bits sets the R
SENSE
voltage level for detection of Charge Over-current, as defined in
Table 20-4 on page 112
. This register should always be written as one-hot.
Note:
Due to synchronization of parameters between clock domains, a guard time of 3 ULP oscillator
cycles + 3 CPU clock cycles is required between each time the BPCOCD register is written. Any
writing to the BPCOCD register during this period will be ignored.
Bit
7
6
5
4
3
2
1
0
DOCDL[7:0]
BPDOCD
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
1
Bit
7
6
5
4
3
2
1
0
COCDL[7:0]
BPCOCD
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
1
Table 20-4.
DL[7:0] with corresponding R
SENSE
Current for all Current Detection Levels
(R
SENSE
= 10 m
Ω
, VREF = 1.100 ± 0.005V)
Current Protection Detection Level
DL[7:0]
Min.
Typ.
Max.
0x01
0.5A
2.0A
3.5A
0x02
1.0A
2.5A
4.0A
0x04
1.5A
3.0A
4.5A
0x08
2.0A
3.5A
5.0A
0x10
2.5A
4.0A
5.5A
0x20
3.0A
4.5A
6.0A
0x40
3.5A
5.0A
6.5A
0x80
4.5A
6.0A
7.5A
All other values
Reserved