ATAVRSB202 Atmel, ATAVRSB202 Datasheet - Page 142

• Manufacturer Part Number: ATAVRSB202
• Description: KIT BATT MGMT FOR ATMEGA32HVB
• Manufacturer: Atmel

Specifications of ATAVRSB202

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: *
• Primary Attributes: *
• Secondary Attributes: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

24.7.3
24.7.4
8042B–AVR–06/10
BPSCTR – Battery Protection Short-current Timing Register
BPOCTR – Battery Protection Over-current Timing Register
• Bit 7 – Reserved
This bit is reserved in the ATmega16HVB/32HVB and will always read as zero.
• Bit 6:0 – SCPT[6:0]: Short-current Protection Timing
These bits control the delay of the Short-circuit Protection. The Short-circuit Timing can be set
with a step size of 62.5 µs as shown in
Table 24-2.
Notes:
Note:
• Bit 7:6 – Reserved
These bits are reserved in the ATmega16HVB/32HVB and will always read as zero.
• Bit 5:0 – OCPT[5:0]: Over-current Protection Timing
These bits control the delay of the Over-circuit Protection. The Over-current Timing can be set
with a step size of 0.5 ms as shown in
Bit
(0xFA)
Read/Write
Initial Value
Bit
(0xFB)
Read/Write
Initial Value
1. The actual value depends on the actual frequency of the
2. Initial value: SCPT[0x10](1ms).
3. An additional delay T
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 BPSCTR register is written. Any
writing to the BPSCTR register during this period will be ignored.
page
the protection circuit. With nomial ULP frequency this delay is maximum 86 µs.
Short-circuit Protection Reaction Time. SCPT[6:0] with corresponding Short-cir-
cuit Delay Time.
27. See
R
R
7
–
0
7
–
0
SCPT[6:0]
0x7E
0x7F
0x00
0x01
0x02
0x03
...
”Electrical Characteristics” on page
R/W
R
6
0
6
–
0
(2)
Short-circuit Protection Reaction Time
d
can be expected after enabling the Discharge FET due to initialization of
R/W
R/W
5
0
5
0
Table 24-3 on page
Table 24-2 on page
R/W
R/W
4
1
4
0
SCPT[6:0]
ATmega16HVB/32HVB
R/W
R/W
3
0
3
0
OCPT[5:0]
230.
143.
142.
(140.5 - 195.5 µs) + T
(78.0 - 133.0 µs) + T
R/W
R/W
(7.83 - 7.88 ms) + T
(7.89 - 7.95 ms) + T
(15.5 - 70.5 µs) + T
(15.5 - 70.5 µs) + T
2
0
”Ultra Low Power RC Oscillator” on
2
0
(1)
Typ
R/W
R/W
...
1
0
1
1
d
d
R/W
d
d
R/W
d
(3)
(3)
d
(3)
(3)
0
0
(3)
0
0
(3)
BPSCTR
BPOCTR
142