ATMEGA32HVB-8X3 Atmel, ATMEGA32HVB-8X3 Datasheet - Page 95

• 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

17.10.2
17.10.3
17.10.4
17.10.5
8042B–AVR–06/10
TCNTnL – Timer/Counter n Register Low Byte
TCNTnH – Timer/Counter n Register High Byte
OCRnA – Timer/Counter n Output Compare Register A
OCRnB – Timer/Counter n Output Compare Register B
The Timer/Counter Register TCNTnL gives direct access, both for read and write operations, to
the Timer/Counter unit 8-bit counter. Writing to the TCNTnL Register blocks (disables) the Com-
pare Match on the following timer clock. Modifying the counter (TCNTnL) while the counter is
running, introduces a risk of missing a Compare Match between TCNTnL and the OCRnx Regis-
ters. In 16-bit mode the TCNTnL register contains the lower part of the 16-bit Timer/Counter n
Register.
When 16-bit mode is selected (the TCWn bit is set to one) the Timer/Counter Register TCNTnH
combined to the Timer/Counter Register TCNTnL gives direct access, both for read and write
operations, to the Timer/Counter unit 16-bit counter. To ensure that both the high and low bytes
are read and written simultaneously when the CPU accesses these registers, the access is per-
formed using an 8-bit temporary high byte register (TEMP). This temporary register is shared by
all the other 16-bit registers. See
The Output Compare Register A contains an 8-bit value that is continuously compared with the
counter value (TCNTnL). A match can be used to generate an Output Compare interrupt.
In 16-bit mode the OCRnA register contains the low byte of the 16-bit Output Compare Register.
To ensure that both the high and the low bytes are written simultaneously when the CPU writes
to these registers, the access is performed using an 8-bit temporary high byte register (TEMP).
This temporary register is shared by all the other 16-bit registers. See
16-bit Mode” on page
The Output Compare Register B contains an 8-bit value that is continuously compared with the
counter value (TCNTnL in 8-bit mode and TCNTnH in 16-bit mode). A match can be used to
generate an Output Compare interrupt.
Bit
0x26 (0x46)
Read/Write
Initial Value
Bit
0x27 (0x47)
Read/Write
Initial Value
Bit
0x28 (0x48)
Read/Write
Initial Value
Bit
0x29 (0x49)
Read/Write
Initial Value
R/W
R/W
R/W
R/W
7
0
7
0
7
0
7
0
90.
R/W
R/W
R/W
R/W
6
0
6
0
6
0
6
0
”Accessing Registers in 16-bit Mode” on page
R/W
R/W
R/W
R/W
5
0
5
0
5
0
5
0
R/W
R/W
R/W
R/W
0
0
4
4
0
4
0
4
TCNTnL[7:0]
TCNTnH[7:0]
OCRnB[7:0]
OCRnA[7:0]
ATmega16HVB/32HVB
R/W
R/W
R/W
R/W
3
0
3
0
3
0
3
0
R/W
R/W
R/W
R/W
2
0
2
0
2
0
2
0
R/W
R/W
R/W
R/W
”Accessing Registers in
1
0
1
0
1
0
1
0
90.
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
TCNTnH
TCNTnL
OCRnB
OCRnA
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