ATTINY461V-10SU Atmel, ATTINY461V-10SU Datasheet - Page 20
![IC MCU AVR 4K FLASH 10MHZ 20SOIC](/photos/6/80/68042/453-20-soic_sml.jpg)
ATTINY461V-10SU
Manufacturer Part Number
ATTINY461V-10SU
Description
IC MCU AVR 4K FLASH 10MHZ 20SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY461V-10SU
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SOIC (7.5mm Width)
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
2-Wire, SPI, USI
Maximum Clock Frequency
10 MHz
Number Of Programmable I/os
16
Number Of Timers
2
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
Package
20SOIC W
Device Core
AVR
Family Name
ATtiny
Maximum Speed
10 MHz
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRBC100 - REF DESIGN KIT BATTERY CHARGER770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATTINY461V-10SU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATTINY461V-10SUR
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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5.4
5.4.1
5.5
5.5.1
20
I/O Memory
Register Description
ATtiny261/461/861
General Purpose I/O Registers
EEARH – EEPROM Address Register
be used. If a reset occurs while a write operation is in progress, the write operation will be com-
pleted provided that the power supply voltage is sufficient.
The I/O space definition of the ATtiny261/461/861 is shown in
All ATtiny261/461/861 I/Os and peripherals are placed in the I/O space. All I/O locations may be
accessed using the LD/LDS/LDD and ST/STS/STD instructions, enabling data transfer between
the 32 general purpose working registers and the I/O space. I/O Registers within the address
range 0x00 - 0x1F are directly bit-accessible using the SBI and CBI instructions. In these regis-
ters, the value of single bits can be checked by using the SBIS and SBIC instructions. Refer to
the instruction set section for more details. When using the I/O specific commands IN and OUT,
the I/O addresses 0x00 - 0x3F must be used. When addressing I/O Registers as data space
using LD and ST instructions, 0x20 must be added to these addresses.
For compatibility with future devices, reserved bits should be written to zero if accessed.
Reserved I/O memory addresses should never be written.
Some of the Status Flags are cleared by writing a logical one to them. Note that, the CBI and
SBI instructions will only operate on the specified bit, and can therefore be used on registers
containing such Status Flags. The CBI and SBI instructions work on registers in the address
range 0x00 to 0x1F, only.
The I/O and Peripherals Control Registers are explained in later sections.
The ATtiny261/461/861 contains three General Purpose I/O Registers. These registers can be
used for storing any information, and they are particularly useful for storing global variables and
Status Flags. General Purpose I/O Registers within the address range 0x00 - 0x1F are directly
bit-accessible using the SBI, CBI, SBIS, and SBIC instructions.
• Bits 7:1 – Res: Reserved Bits
These bits are reserved and will always read as zero.
• Bit 0 – EEAR8: EEPROM Address
This is the most significant EEPROM address bit of ATtiny861. In devices with less EEPROM,
i.e. ATtiny261/ATtiny461, this bit is reserved and will always read zero. The initial value of the
EEPROM Address Register (EEAR) is undefined and a proper value must therefore be written
before the EEPROM is accessed.
Bit
0x1F (0x3F)
Read/Write
Initial Value
R
7
–
0
R
6
–
0
5
–
R
0
R
4
–
0
R
3
–
0
“Register Summary” on page
R
2
–
0
R
1
–
0
EEAR8
R/W
X/0
0
2588E–AVR–08/10
EEARH
223.
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