ATMEGA128-16AI Atmel, ATMEGA128-16AI Datasheet - Page 19

• Manufacturer Part Number: ATMEGA128-16AI
• Description: IC AVR MCU 128K 16MHZ 64-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA128-16AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• For Use With: ATSTK501 - ADAPTER KIT FOR 64PIN AVR MCU
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Q1167170A

2467V–AVR–02/11
The Indirect with Displacement mode reaches 63 address locations from the base address given
by the Y- or Z-register.
When using register indirect addressing modes with automatic pre-decrement and post-incre-
ment, the address registers X, Y, and Z are decremented or incremented.
The 32 general purpose working registers, 64 I/O registers, and the 4096bytes of internal data
SRAM in the ATmega128 are all accessible through all these addressing modes. The Register
file is described in
Figure 9. Data Memory Map
Memory Configuration A
“General Purpose Register File” on page
64 I/O Registers
160 Ext I/O Reg.
External SRAM
Internal SRAM
Data Memory
32 Registers
(0 - 64K x 8)
(4096 x 8)
$10FF
$1100
$FFFF
$0000 - $001F
$0020 - $005F
$0060 - $00FF
$0100
Memory Configuration B
64 I/O Registers
External SRAM
Internal SRAM
Data Memory
32 Registers
(0 - 64K x 8)
(4000 x 8)
11.
$0FFF
$1000
$0000 - $001F
$0020 - $005F
$0060
$FFFF
ATmega128
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