ATmega8HVA Atmel Corporation, ATmega8HVA Datasheet - Page 128

• Manufacturer Part Number: ATmega8HVA
• Manufacturer: Atmel Corporation

Specifications of ATmega8HVA

• Flash (kbytes): 8 Kbytes
• Pin Count: 28
• Max. Operating Frequency: 4 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 3
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 256
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -20 to 85
• I/o Supply Class: 1.8 to 9.0
• Operating Voltage (vcc): 1.8 to 9.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

23.9.3
128
ATmega8HVA/16HVA
BPSCTR – Battery Protection Short-circuit Timing Register
• Bit 4 – SCD: Short Circuit Protection Disabled
When the SCD bit is set, the Short-circuit Protection is disabled. The Short-circuit Detection will
be disabled, and any Short-circuit condition will be ignored.
• Bit 3 – DOCD: Discharge Over-current Protection Disabled
When the DOCD bit is set, the Discharge Over-current Protection is disabled. The Discharge
Over-current Detection will be disabled, and any Discharge Over-current condition will be
ignored.
• Bit 2 – COCD: Charge Over-current Protection Disable
When the COCD bit is set, the Charge Over-current Protection is disabled. The Charge Over-
current Detection will be disabled, and any Charge Over-current condition will be ignored.
• Bit 1 – DHCD: Discharge High-current Protection Disabled
When the DHCD bit is set, the Discharge High-current Protection is disabled. The Discharge
High-current Detection will be disabled, and any Discharge High-current condition will be
ignored.
• Bit 0 – CHCD: Charge High-current Protection Disable
When the CHCD bit is set, the Charge High-current Protection is disabled. The Charge High-cur-
rent Detection will be disabled, and any Charge High-current condition will be ignored.
Note:
• Bit 7 – Res: Reserved Bits
This bit is reserved and will always read as zero.
• Bit 6:0 – SCPT6:0: Short-circuit 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 23-2.
Bit
(0xFA)
Read/Write
Initial Value
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 BPCR register is written. Any writ-
ing to the BPCR register during this period will be ignored.
Short-circuit Protection Reaction Time. SCPT[6:0] with corresponding Short-cir-
cuit Delay Time.
R
7
–
0
SCPT[6:0]
0x00
0x01
0x02
0x03
R/W
6
0
(2)
Short-circuit Protection Reaction Time
R/W
5
0
Table 23-2 on page
R/W
4
1
SCPT[6:0]
R/W
3
0
128.
(140.5 - 195.5 µs) + T
R/W
(78.0 - 133.0 µs) + T
(15.5 - 70.5 µs) + T
(15.5 - 70.5 µs) + T
2
0
(1)
Typ
R/W
1
0
d
d
R/W
d
(3)
(3)
0
0
d
(3)
(3)
8024A–AVR–04/08
BPSCTR