ATmega16HVB Atmel Corporation, ATmega16HVB Datasheet - Page 90
ATmega16HVB
Manufacturer Part Number
ATmega16HVB
Description
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega16HVB-8X3
Manufacturer:
LT
Quantity:
51
Part Number:
ATmega16HVB-8X3
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
- Current page: 90 of 276
- Download datasheet (6Mb)
17.9
90
Accessing registers in 16-bit mode
ATmega16HVB/32HVB
Figure 17-9
Figure 17-9. Timer/counter timing diagram, CTC mode, with prescaler (f
In 16-bit mode (the TCWn bit is set to one) the TCNTnH/L and OCRnA/B or TCNTnL/H and
OCRnB/A are 16-bit registers that can be accessed by the AVR CPU via the 8-bit data bus. The
16-bit register must be byte accessed using two read or write operations. The 16-bit
Timer/Counter has a single 8-bit register for temporary storing of the high byte of the 16-bit
access. The same temporary register is shared between all 16-bit registers. Accessing the low
byte triggers the 16-bit read or write operation. When the low byte of a 16-bit register is written
by the CPU, the high byte stored in the temporary register, and the low byte written are both cop-
ied into the 16-bit register in the same clock cycle. When the low byte of a 16-bit register is read
by the CPU, the high byte of the 16-bit register is copied into the temporary register in the same
clock cycle as the low byte is read.
There is one exception in the temporary register usage. In the Output Compare mode the 16-bit
Output Compare Register OCRnA/B is read without the temporary register, because the Output
Compare Register contains a fixed value that is only changed by CPU access. However, in 16-
bit Input Capture mode the ICRn register formed by the OCRnA and OCRnB registers must be
accessed with the temporary register.
To do a 16-bit write, the high byte must be written before the low byte. For a 16-bit read, the low
byte must be read before the high byte.
TCNTn
(clk
OCRnx
(CTC)
OCFnx
clk
clk
PCK
PCK
Tn
/8)
shows the setting of OCFnA and the clearing of TCNTn in CTC mode.
TOP - 1
TOP
TOP
BOTTOM
clk_I/O
BOTTOM + 1
/8).
8042D–AVR–10/11
Related parts for ATmega16HVB
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
U6046BREAR WINDOW HEATING TIMER / LONG-TERM TIMER
Manufacturer:
ATMEL Corporation
Datasheet: