ATMEGA32HVB-8X3 Atmel, ATMEGA32HVB-8X3 Datasheet - Page 109
![MCU AVR 32KB FLASH 8MHZ 44TSSOP](/photos/12/32/123222/44x1-tssop_sml.jpg)
ATMEGA32HVB-8X3
Manufacturer Part Number
ATMEGA32HVB-8X3
Description
MCU AVR 32KB FLASH 8MHZ 44TSSOP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32HVB-8X3
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI
Peripherals
POR, WDT
Number Of I /o
17
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4 V ~ 25 V
Data Converters
A/D 7x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TSSOP
Processor Series
ATMEGA32x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
SPI, TWI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
17
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRSB200
Minimum Operating Temperature
- 40 C
On-chip Adc
12 bit, 7 Channel
Package
44TSSOP
Device Core
AVR
Family Name
ATmega
Maximum Speed
8 MHz
Operating Supply Voltage
5|9|12|15|18|24 V
For Use With
ATSTK524 - KIT STARTER ATMEGA32M1/MEGA32C1ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA32HVB-8X3
Manufacturer:
Atmel
Quantity:
408
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19.3
8042B–AVR–06/10
Normal Operation
In normal conversion mode two different output values are provided, Instantaneous Current and
Accumulate Current. The Instantaneous Current Output has a short conversion time at the cost
of lower resolution. The Accumulate Current Output provides a highly accurate current measure-
ment for Coulomb Counting.
The CC-ADC also provides a special Regular Current detection mode. This allows ultra-low
power operation in Power-save mode when small charge or discharge currents are flowing.
For offset cancellation the polarity of the input signal could be switched run time. Using this fea-
ture, the internal CC-ADC offset could be removed. See application note AVR352.
When enabled the CC-ADC continuously measures the voltage over the external sense resistor
R
• Instantaneous Conversion Result
• Accumulation Conversion Result
The Instantaneous Current conversion time is fixed to 3.9 ms (typical value) allowing the output
value to closely follow the input. After each Instantaneous Current conversion an interrupt is
generated if the interrupt is enabled. Data from conversion will be updated in the Instantaneous
Current registers CADICL and CADICH simultaneously as the interrupt is given. To avoid losing
conversion data, both the low and high byte must be read within a 3.9 ms timing window after
the corresponding interrupt is given. When the low byte register is read, updating of the Instanta-
neous Current registers and interrupts will be stopped until the high byte is read.
shows an Instantaneous Current conversion diagram, where DATA4 will be lost because DATA3
reading is not completed within the limited period.
Figure 19-2. Instantaneous Current Conversions
The Accumulate Current output is a high-resolution, high accuracy output with programmable
conversion time selected by the CADAS bits in CADCSRA. The converted value is an accurate
measurement of the average current flow during one conversion period. The CC-ADC generates
an interrupt each time a new Accumulate Current conversion has finished if the interrupt is
enabled. Data from conversion will be updated in the Accumulation Current registers - CADAC0,
CADAC1, CADAC2 and CADAC3 simultaneously as the interrupt is given. To avoid losing con-
version data, all bytes must be read within the selected conversion period. When the lower byte
registers are read, updating of the Accumulation Current registers and interrupts will be stopped
until the highest byte is read.
where DATA4 will be lost because DATA3 reading is not completed within the limited period.
Enable
Instantaneous
Interrupt
Instantaneous
Data
Read low byte
Read high byte
SENSE
. Running in normal conversion mode, two data conversion outputs are provided.
INVALID DATA
~12 ms settling
Figure 19-3
shows an Accumulation Current conversion example,
ATmega16HVB/32HVB
DATA 1
3.9 ms
DATA 2
3.9 ms
DATA 3
7.8 ms
Figure 19-2
DATA 5
109
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