ATMEGA128-16AI Atmel, ATMEGA128-16AI Datasheet - Page 285

• 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
Table 114. Explanation of Different Variables Used in
Pointer
Notes:
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
Variable
(3)
1. The Z-register is only 16 bits wide. Bit 16 is located in the RAMPZ register in the I/O map.
2. Z0: should be zero for all SPM commands, byte select for the (E)LPM instruction.
3. See
Z-pointer during self-programming.
PC[15:7]
“Addressing the Flash During Self-Programming” on page 278
PC[6:0]
15
6
Corresponding
Z16
Z-value
Z7:Z1
Z16
Z7
(1)
(1)
:Z8
Description
Most significant bit in the program counter. (The
program counter is 16 bits PC[15:0])
Most significant bit which is used to address the
words within one page (128 words in a page
requires 7 bits PC [6:0]).
Bit in Z-register that is mapped to PCMSB.
Because Z0 is not used, the ZPCMSB equals
PCMSB + 1.
Bit in Z-register that is mapped to PAGEMSB.
Because Z0 is not used, the ZPAGEMSB
equals PAGEMSB + 1.
Program counter page address: Page select, for
page erase and page write
Program counter word address: Word select, for
filling temporary buffer (must be zero during
page write operation)
(2)
Figure 134
and the Mapping to the Z-
for details about the use of
ATmega128
285