ATMEGA8HVD-4MX Atmel, ATMEGA8HVD-4MX Datasheet - Page 111

• Manufacturer Part Number: ATMEGA8HVD-4MX
• Description: MCU AVR 8K FLASH 2.1-8V 4MHZ QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8HVD-4MX

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 5
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 2.4 V
• Data Converters: A/D 1x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 18-MLF® Exposed Pad (Staggered Leads), DFN
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Connectivity: -

20.8.5
8052B–AVR–09/08
BPSCD – Battery Protection Short-circuit Detection Level Register
Table 20-3.
Notes:
Note:
• Bits 7:0 – SCDL7:0: Short-circuit Detection Level
These bits sets the R
as defined in
Note:
Bit
Read/Write
Initial Value
1. The actual value depends on the actual frequency of the
2. Initial value.
3. An additional delay up to 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.
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 BPSCD register is written. Any
writing to the BPSCD register during this period will be ignored.
page
related to the initialization of the protection circuitry. For the Discharge Over-Current protec-
tion, 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 maxi-
mum 0.2 ms.
Table 20-4 on page
Over-current Protection Reaction Time. OCPT[5:0] with corresponding Over-
current Delay Time.
R/W
24. See
7
0
OCPT[5:0]
0x02
SENSE
0x00
0x01
0x03
0x3E
0x3F
...
”Electrical Characteristics” on page
R/W
(2)
6
0
voltage level for detection of Short-circuit in the discharge direction,
Over-current Protection Reaction Time
R/W
112. This register should always be written as one-hot.
5
0
d
can be expected after enabling the corresponding FET. This is
R/W
4
0
SCDL[7:0]
R/W
3
0
ATmega4HVD/8HVD
142.
R/W
2
0
(30.5 - 31.0 ms) + T
(31.0 - 31.5 ms) + T
”Ultra Low Power RC Oscillator” on
(0.0 - 0.5 ms) + T
(0.0 - 0.5 ms) + T
(0.5 - 1.0 ms) + T
(1.0 - 1.5 ms) + T
(1)
R/W
1
0
Typ
...
R/W
d
d
d
d
0
1
(3)
(3)
(3)
(3)
d
d
(3)
(3)
BPSCD
111