ATTINY44V-10SSU Atmel, ATTINY44V-10SSU Datasheet - Page 20
![IC MCU AVR 4K FLASH 10MHZ 14SOIC](/photos/7/39/73946/313-14-soic_sml.jpg)
ATTINY44V-10SSU
Manufacturer Part Number
ATTINY44V-10SSU
Description
IC MCU AVR 4K FLASH 10MHZ 14SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY44V-10SSU
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
12
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 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
14-SOIC (3.9mm Width), 14-SOL
Package
14SOIC
Device Core
AVR
Family Name
ATtiny
Maximum Speed
10 MHz
Operating Supply Voltage
2.5|3.3|5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
12
Interface Type
SPI/USI
On-chip Adc
8-chx10-bit
Number Of Timers
2
For Use With
ATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATTINY44V-10SSU
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
ATtiny24/44/84
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 ATtiny24/44/84 is shown in
All ATtiny24/44/84 I/Os and peripherals are placed in the I/O space. All I/O locations may be
accessed by the LD/LDS/LDD and ST/STS/STD instructions, transferring data 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 registers, the
value of single bits can be checked by using the SBIS and SBIC instructions. See 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 CBI and SBI
instructions will only operate on the specified bit, and can therefore be used on registers contain-
ing such Status Flags. The CBI and SBI instructions work with registers 0x00 to 0x1F only.
The I/O and Peripherals Control Registers are explained in later sections.
The ATtiny24/44/84 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 in the ATtiny24/44/84 and will always read as zero.
• Bit 0 – EEAR8: EEPROM Address
This is the most significant EEPROM address bit of ATtiny84. In devices with less EEPROM, i.e.
ATtiny24/ATtiny44, 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
8006K–AVR–10/10
EEARH
213.
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