ATtiny861 Automotive Atmel Corporation, ATtiny861 Automotive Datasheet - Page 81
ATtiny861 Automotive
Manufacturer Part Number
ATtiny861 Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.ATTINY261_AUTOMOTIVE.pdf
(11 pages)
3.ATTINY261_AUTOMOTIVE.pdf
(16 pages)
4.ATTINY261_AUTOMOTIVE.pdf
(226 pages)
Specifications of ATtiny861 Automotive
Flash (kbytes)
8 Kbytes
Pin Count
20
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
8
Hardware Qtouch Acquisition
No
Max I/o Pins
16
Ext Interrupts
16
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 150
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
No
Calibrated Rc Oscillator
Yes
- AT90CAN128_AUTOMOTIVE PDF datasheet
- ATTINY261_AUTOMOTIVE PDF datasheet #2
- ATTINY261_AUTOMOTIVE PDF datasheet #3
- ATTINY261_AUTOMOTIVE PDF datasheet #4
- Current page: 81 of 226
- Download datasheet (5Mb)
14.9
7753F–AVR–01/11
Accessing Registers in 16-bit Mode
In 16-bit mode (the TCW0 bit is set to one) the TCNT0H/L and OCR0A/B or TCNT0L/H and
OCR0B/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 OCR0A/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 ICR0 register formed by the OCR0A and OCR0B 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.
ATtiny261/ATtiny461/ATtiny861
81
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