ATMEGA165P-16ANR Atmel, ATMEGA165P-16ANR Datasheet - Page 24
![IC MCU AVR 16K 16MHZ 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA165P-16ANR
Manufacturer Part Number
ATMEGA165P-16ANR
Description
IC MCU AVR 16K 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA165P-16ANR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, 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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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6.5
6.6
6.6.1
6.6.2
6.6.3
8019K–AVR–11/10
General Purpose I/O Registers
Register Description
EEARH and EEARL – EEPROM Address Register
EEDR – EEPROM Data Register
EECR – EEPROM Control Register
The ATmega165P 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.
• 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.
• Bits 7..4 – Res: Reserved Bits
These bits are reserved and will always read as zero.
Bit
0x22 (0x42)
0x21 (0x41)
Read/Write
Initial Value
Bit
0x20 (0x40)
Read/Write
Initial Value
Bit
0x1F (0x3F)
Read/Write
Initial Value
EEAR7
MSB
R/W
R/W
15
R
R
X
7
–
0
–
7
0
7
0
EEAR6
R/W
R/W
14
R
R
X
6
–
0
–
6
0
6
0
EEAR5
R/W
R/W
13
R
R
X
5
–
0
–
5
0
5
0
EEAR4
R/W
R/W
12
R
R
X
4
–
0
–
4
0
4
0
EEAR3
EERIE
R/W
R/W
R/W
11
3
0
R
X
–
3
0
3
0
EEMWE
EEAR2
R/W
R/W
R/W
10
R
X
2
0
–
2
0
2
0
EEAR1
EEWE
ATmega165P
R/W
R/W
R/W
R
X
9
–
1
0
1
0
1
X
EEAR8
EEAR0
EERE
LSB
R/W
R/W
R/W
R/W
X
X
8
0
0
0
0
0
EEARH
EEARL
EEDR
EECR
24
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