ATTINY44V-10PU Atmel, ATTINY44V-10PU Datasheet - Page 21
![IC MCU AVR 4K FLASH 10MHZ 14-DIP](/photos/7/39/73953/313-14-dip_sml.jpg)
ATTINY44V-10PU
Manufacturer Part Number
ATTINY44V-10PU
Description
IC MCU AVR 4K FLASH 10MHZ 14-DIP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY44V-10PU
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-DIP (0.300", 7.62mm)
Package
14PDIP
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
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- Download datasheet (5Mb)
5.5.2
5.5.3
5.5.4
8006K–AVR–10/10
EEARL – EEPROM Address Register
EEDR – EEPROM Data Register
EECR – EEPROM Control Register
• Bit 7 – EEAR7: EEPROM Address
This is the most significant EEPROM address bit of ATtiny44. In devices with less EEPROM, i.e.
ATtiny24, 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.
• Bits 6:0 – EEAR6:0: EEPROM Address
These are the (low) bits of the EEPROM Address Register. The EEPROM data bytes are
addressed linearly in the range 0...128/256/512. The initial value of EEAR is undefined and a
proper value must be therefore be written before the EEPROM may be accessed.
• Bits 7:0 – EEDR7:0: EEPROM Data
For the EEPROM write operation the EEDR Register contains the data to be written to the
EEPROM in the address given by the EEAR Register. For the EEPROM read operation, the
EEDR contains the data read out from the EEPROM at the address given by EEAR.
• Bit 7 – Res: Reserved Bit
This bit is reserved for future use and will always read as 0 in ATtiny24/44/84. For compatibility
with future AVR devices, always write this bit to zero. After reading, mask out this bit.
• Bit 6 – Res: Reserved Bit
This bit is reserved in the ATtiny24/44/84 and will always read as zero.
• Bits 5:4 – EEPM1, EEPM0: EEPROM Programming Mode Bits
The EEPROM Programming mode bits setting defines which programming action that will be
triggered when writing EEPE. It is possible to program data in one atomic operation (erase the
Bit
0x1E (0x3E)
Read/Write
Initial Value
Bit
0x1D (0x3D)
Read/Write
Initial Value
Bit
0x1C (0x3C)
Read/Write
Initial Value
EEAR7
EEDR7
R/W
R/W
R
X
7
7
0
7
–
0
EEAR6
EEDR6
R/W
R/W
R
X
6
6
0
6
–
0
EEAR5
EEDR5
EEPM1
R/W
R/W
R/W
X
X
5
5
0
5
EEAR4
EEDR4
EEPM0
R/W
R/W
R/W
X
X
4
4
0
4
EEAR3
EEDR3
EERIE
R/W
R/W
R/W
X
3
3
0
3
0
EEMPE
EEAR2
EEDR2
R/W
R/W
R/W
X
2
2
0
2
0
ATtiny24/44/84
EEAR1
EEDR1
EEPE
R/W
R/W
R/W
X
X
1
1
0
1
EEAR0
EEDR0
EERE
R/W
R/W
R/W
X
0
0
0
0
0
EEARL
EEDR
EECR
21
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