ATMEGA169PV-8AUR Atmel, ATMEGA169PV-8AUR Datasheet - Page 28

• Manufacturer Part Number: ATMEGA169PV-8AUR
• Description: MCU AVR 16KB FLASH 16MHZ 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA169PV-8AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K 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: *
• Package: 64TQFP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 8 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 54
• Interface Type: SPI/USART/USI
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.5
7.5.1
7.5.2
7.5.3
7.6
7.6.1
8018P–AVR–08/10
General Purpose I/O Registers
EEPROM Register Description
GPIOR2 – General Purpose I/O Register 2
GPIOR1 – General Purpose I/O Register 1
GPIOR0 – General Purpose I/O Register 0
EEARH and EEARL – EEPROM Address Register
The ATmega169P 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 Sta-
tus 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 15:9 – Res: Reserved Bits
These bits are reserved and will always read as zero.
• Bits 8:0 – EEAR8:0: EEPROM Address
The EEPROM Address Registers – EEARH and EEARL specify the EEPROM address in the
512 bytes EEPROM space. The EEPROM data bytes are addressed linearly between 0 and
511. The initial value of EEAR is undefined. A proper value must be written before the EEPROM
may be accessed.
Bit
0x2B (0x4B)
Read/Write
Initial Value
Bit
0x2A (0x4A)
Read/Write
Initial Value
Bit
0x1E (0x3E)
Read/Write
Initial Value
Bit
0x22 (0x42)
0x21 (0x41)
Read/Write
Initial Value
EEAR7
MSB
MSB
MSB
R/W
R/W
R/W
R/W
15
R
X
7
0
7
0
7
0
–
7
0
EEAR6
R/W
R/W
R/W
R/W
14
R
X
6
0
6
0
6
0
–
6
0
EEAR5
R/W
R/W
R/W
R/W
13
R
X
5
0
5
0
5
0
–
5
0
EEAR4
R/W
R/W
R/W
R/W
12
R
X
4
0
4
0
4
0
–
4
0
EEAR3
R/W
R/W
R/W
R/W
11
R
X
3
0
3
0
3
0
–
3
0
EEAR2
R/W
R/W
R/W
R/W
10
R
X
2
0
2
0
2
0
–
2
0
EEAR1
ATmega169P
R/W
R/W
R/W
R/W
R
X
9
–
1
0
1
0
1
0
1
0
EEAR8
EEAR0
LSB
LSB
LSB
R/W
R/W
R/W
R/W
R/W
X
X
8
0
0
0
0
0
0
0
GPIOR2
GPIOR1
GPIOR0
EEARH
EEARL
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