ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 125

• 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

21.6.3
8042D–AVR–10/11
BGCSR – Bandgap control and Status Register
Figure 21-2. Illustration of VREF as a function of temperature.
• Bits 7:6 – Reserved
These bits are reserved and will always read as zero.
• Bit 5 – BGD: Bandgap Disable
Setting this bit to one will disable the bandgap voltage reference. This bit must be cleared (zero)
before enabling Cell Balancing, CC-ADC, V-ADC or Battery Protection, and must remain unset
(zero) while either of these modules are enabled. Note that after clearing this bit, a settling time
is required before the voltage is stable, see
• Bit 4 – BGSCDE: Bandgap Short Circuit Detection Enabled
Setting this bit to one will enable the bandgap Short Circuit Detector. This bit should be cleared if
the BGD bit in the BGCSR is set to one to avoid false setting of the BGSCDIF bit.
• Bits 3:2 – Reserved
These bits are reserved and will always read as zero.
• Bit 1 – BGSCDIF: Bandgap Short Circuit Detection Interrupt Flag
The bit is set when the Bandgap Short Circuit Detector is enabled and buffered bandgap refer-
ence is different from the unbuffered Bandgap reference. The BGSCDIF is cleared by hardware
when executing the corresponding interrupt handling vector. Alternatively, BGSCDIF is cleared
by writing a logic one to its bit position.
• Bit 0 – BGSCDIE: Bandgap Short Circuit Detection Interrupt Enable
When this bit is set, the Bandgap Short Circuit Detection Interrupt is enabled. The corresponding
interrupt is executed if a short-circuit is detected on the External Decoupling Pin for the Voltage
Reference.
Bit
(0xD2)
Read/Write
Initial Value
R
7
–
0
R
6
–
0
BGD
R/W
5
0
BGSCDE
R/W
4
0
”Bandgap buffer settling time” on page
ATmega16HVB/32HVB
R
3
–
0
R
2
–
0
BGSCDIF
R/W
1
0
BGSCDIE
R/W
0
0
123.
BGCSR
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