ATMEGA16HVA-4CKU Atmel, ATMEGA16HVA-4CKU Datasheet - Page 118
![MCU AVR 16K FLASH 4MHZ 36-LGA](/photos/12/32/123221/36ck1-lga_sml.jpg)
ATMEGA16HVA-4CKU
Manufacturer Part Number
ATMEGA16HVA-4CKU
Description
MCU AVR 16K FLASH 4MHZ 36-LGA
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16HVA-4CKU.pdf
(196 pages)
Specifications of ATMEGA16HVA-4CKU
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
7
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 9 V
Data Converters
A/D 5x12b
Oscillator Type
External
Operating Temperature
-20°C ~ 85°C
Package / Case
36-LGA
Processor Series
ATMEGA16x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SPI
Maximum Clock Frequency
4 MHz
Number Of Programmable I/os
6
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRSB200, ATAVRSB201
Minimum Operating Temperature
- 20 C
On-chip Adc
12 bit, 5 Channel
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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21.3
21.3.1
118
Register Description
ATmega8HVA/16HVA
BGCCR – Bandgap Calibration C Register
Figure 21-1. Reference Circuitry
• Bit 7 - BGD: Bandgap Disable
Setting the BGD bit to one will disable the bandgap voltage reference. This bit must be cleared
(zero) before enabling CC-ADC, V-ADC or Battery Protection, and must remain unset (zero)
while either of these modules are enabled.
• Bit 6 – Res: Reserved Bit
This bit is reserved for future use.
• Bit 5:0 – BGCC5:0: BG Calibration of PTAT Current
These bits are used for trimming of the nominal value of the bandgap reference voltage. These
bits are binary coded. Minimum VREF: 000000, maximum VREF: 111111. Step size approxi-
mately 2 mV.
Updating the BGCC bits will affect both the regulator output voltage and the BOD detection
level. The BOD will react quickly to the new detection level, while the voltage regulator will adjust
the output voltage more slowly due to the external reservoir capacitor. Therefore, if the value is
increased more than a certain step size, the new BOD level may rise above the regulator output
voltage, and a false BOD reset will occur. It is recommended that the BGCC bits are updated
with a step size of 1. To allow the voltage regulator to reach the new level between each step, a
delay of 20 µs should be added between each update of the BGCC values .
Bit
(0xD0)
Read/Write
Initial Value
BG Calibration
BG Reference
BGD
Register
R/W
7
0
R
6
–
0
1.1V
VPTAT
BGCC5
R/W
5
0
BGCC4
R/W
4
0
BGCC3
R/W
VREF_P
VREF_N
0.22V
3
0
VREF_GND
VREF
BGCC2
R/W
2
0
BGCC1
R/W
1
0
BGCC0
CREF
R/W
0
0
8024A–AVR–04/08
BGCCR
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