ATMEGA128A-AU Atmel, ATMEGA128A-AU Datasheet - Page 137

• Manufacturer Part Number: ATMEGA128A-AU
• Description: MCU 8BIT 128K ISP FLASH 64-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA128A-AU

• 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: JTAG
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• On-chip Dac: 10 bit, 8 Channel
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 16MHz
• Total Internal Ram Size: 4KB
• # I/os (max): 53
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4784435

Table 15-5.
Note:
15.11.3
15.11.4
8151H–AVR–02/11
Mode
12
13
14
15
1. The CTCn and PWMn1:0 bit definition names are obsolete. Use the
WGMn3
TCCR1B - Timer/Counter1 Control Register B
TCCR3B - Timer/Counter3 Control Register B
location of these bits are compatible with previous versions of the timer.
1
1
1
1
Waveform Generation Mode Bit Description
WGMn2
(CTCn)
1
1
1
1
• Bit 7 – ICNCn: Input Capture Noise Canceler
Setting this bit (to one) activates the Input Capture Noise Canceler. When the Noise Canceler is
activated, the input from the Input Capture Pin (ICPn) is filtered. The filter function requires four
successive equal valued samples of the ICPn pin for changing its output. The Input Capture is
therefore delayed by four Oscillator cycles when the noise canceler is enabled.
• Bit 6 – ICESn: Input Capture Edge Select
This bit selects which edge on the Input Capture Pin (ICPn) that is used to trigger a capture
event. When the ICESn bit is written to zero, a falling (negative) edge is used as trigger, and
when the ICESn bit is written to one, a rising (positive) edge will trigger the capture.
When a capture is triggered according to the ICESn setting, the counter value is copied into the
Input Capture Register (ICRn). The event will also set the Input Capture Flag (ICFn), and this
can be used to cause an Input Capture Interrupt, if this interrupt is enabled.
When the ICRn is used as TOP value (see description of the WGMn3:0 bits located in the
TCCRnA and the TCCRnB Register), the ICPn is disconnected and consequently the Input Cap-
ture function is disabled.
• Bit 5 – Reserved Bit
This bit is reserved for future use. For ensuring compatibility with future devices, this bit must be
written to zero when TCCRnB is written.
• Bit 4:3 – WGMn3:2: Waveform Generation Mode
See TCCRnA Register description.
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
(PWMn1)
WGMn1
0
0
1
1
ICNC1
ICNC3
(PWMn0)
R/W
R/W
WGMn0
7
0
7
0
0
1
0
1
ICES1
ICES3
R/W
R/W
6
0
6
0
CTC
(Reserved)
Fast PWM
Fast PWM
Timer/Counter Mode of
R
R
5
–
0
5
–
0
Operation
WGM33
WGM13
R/W
R/W
4
0
4
0
(1)
WGM
WGM12
WGM32
n2:0 definitions. However, the functionality and
R/W
R/W
3
0
3
0
ICRn
–
ICRn
OCRnA
TOP
CS32
CS12
R/W
R/W
2
0
2
0
Immediate
–
BOTTOM
BOTTOM
OCRn
Update of
CS31
CS11
ATmega128A
R/W
R/W
1
0
1
0
x
at
CS30
CS10
R/W
R/W
0
0
0
0
MAX
–
TOP
TOP
TOVn Flag
Set on
TCCR3B
TCCR1B
137