ATAVRSB202 Atmel, ATAVRSB202 Datasheet - Page 143

• 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

24.7.5
8042B–AVR–06/10
BPHCTR – Battery Protection High-current Timing Register
Table 24-3.
Notes:
Note:
• Bit 7:6 – Reserved
These bits are reserved in the ATmega16HVB/32HVB and will always read as zero.
• Bit 5:0 – HCPT[5:0]: High-current Protection Timing
These bits control the delay of the High-circuit Protection. The High-current Timing can be set
with a step size of 2 ms as shown in
Table 24-4.
Bit
(0xFC)
Read/Write
Initial Value
1. The actual value depends on the actual frequency of the
2. Initial value.
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 BPOCTR register is written. Any
writing to the BPOCTR register during this period will be ignored.
page
the initialization of the protection circuitry. For the Discharge Over-Current protection, this
applies when enabling the Discharge FET. For Charge Over-Current protection, this applies
when enabling the Charge FET. With nominal ULP frequency this delay is maximum 0.1 ms.
Over-current Protection Reaction Time. OCPT[5:0] with corresponding Over-cur-
rent Delay Time.
High-current Protection Reaction Time. HCPT[5:0] with corresponding High-cur-
rent Delay Time.
27. See
R
7
–
0
OCPT[5:0]
HCPT[5:0]
0x02
0x01
0x3E
0x00
0x01
0x03
0x3F
0x00
0x02
0x03
...
”Electrical Characteristics” on page
(2)
(2)
R
6
–
0
Over-current Protection Reaction Time
High-current Protection Reaction Time
d
can be expected after enabling the corresponding FET. This is related to
R/W
5
0
Table 24-4 on page
R/W
4
0
ATmega16HVB/32HVB
R/W
3
0
HCPT[5:0]
230.
143.
R/W
(30.5 - 31.0 ms) + T
(31.0 - 31.5 ms) + T
”Ultra Low Power RC Oscillator” on
2
0
(0.0 - 0.5 ms) + T
(0.0 - 0.5 ms) + T
(0.5 - 1.0 ms) + T
(1.0 - 1.5 ms) + T
(0 - 2 ms) + T
(0 - 2 ms) + T
(2 - 4 ms) + T
(4 - 6 ms) + T
(1)
(1)
Typ
Typ
R/W
...
1
0
d
d
d
d
(3)
(3)
(3)
(3)
d
d
d
d
(3)
(3)
(3)
(3)
R/W
d
d
(3)
(3)
0
1
BPHCTR
143