ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 140

• Manufacturer Part Number: ATmega16HVB
• Manufacturer: Atmel Corporation

Specifications of ATmega16HVB

• Flash (kbytes): 16 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 8 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 17
• Ext Interrupts: 15
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 4.0 to 25
• Operating Voltage (vcc): 4.0 to 25
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

24.7.5
140
ATmega16HVB/32HVB
BPHCTR – Battery protection high-current timing register
Table 24-3.
Notes:
Note:
• Bit 7:6 – Reserved
These bits are reserved in the Atmel 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 three ULP oscilla-
tor cycles plus three 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 0.1ms.
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-current
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.
R/W
4
0
R/W
3
0
HCPT[5:0]
225.
(30.5ms - 31.0ms) + T
(31.0ms - 31.5ms) + T
R/W
(0.0ms - 0.5ms) + T
(0.0ms - 0.5ms) + T
(0.5ms - 1.0ms) + T
(1.0ms - 1.5ms) + T
2
0
”Ultra Low Power RC oscillator” on
(0ms - 2ms) + T
(0ms - 2ms) + T
(2ms - 4ms) + T
(4ms - 6ms) + T
(1)
(1)
Typ
Typ
R/W
...
1
0
d
d
d
d
(3)
(3)
(3)
(3)
d
d
d
d
R/W
(3)
(3)
(3)
(3)
d
d
0
1
(3)
(3)
8042D–AVR–10/11
BPHCTR