ATmega128A Atmel Corporation, ATmega128A Datasheet - Page 381

• Manufacturer Part Number: ATmega128A
• Manufacturer: Atmel Corporation

Specifications of ATmega128A

• Flash (kbytes): 128 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 8
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 8
• Input Capture Channels: 2
• Pwm Channels: 7
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8151H–AVR–02/11
15 16-bit Timer/Counter (Timer/Counter1 and Timer/Counter3) ........... 112
16 Timer/Counter3, Timer/Counter2, and Timer/Counter1 Prescalers . 145
17 8-bit Timer/Counter2 with PWM .......................................................... 148
14.3
14.4
14.5
14.6
14.7
14.8
14.9
14.10
14.11
15.1
15.2
15.3
15.4
15.5
15.6
15.7
15.8
15.9
15.10
15.11
16.1
16.2
16.3
16.4
17.1
17.2
17.3
17.4
17.5
17.6
17.7
17.8
Timer/Counter Clock Sources .........................................................................94
Counter Unit ....................................................................................................94
Output Compare Unit .......................................................................................95
Compare Match Output Unit ............................................................................97
Modes of Operation .........................................................................................98
Timer/Counter Timing Diagrams ...................................................................102
Asynchronous Operation of Timer/Counter0 .................................................104
Timer/Counter Prescaler ...............................................................................106
Register Description ......................................................................................106
Features ........................................................................................................112
Overview ........................................................................................................112
Accessing 16-bit Registers ............................................................................115
Timer/Counter Clock Sources .......................................................................118
Counter Unit ..................................................................................................118
Input Capture Unit .........................................................................................120
Output Compare Units ...................................................................................122
Compare Match Output Unit ..........................................................................124
Modes of Operation .......................................................................................125
Timer/Counter Timing Diagrams ...................................................................132
Register Description ......................................................................................134
Internal Clock Source ....................................................................................145
Prescaler Reset .............................................................................................145
External Clock Source ...................................................................................145
Register Description ......................................................................................146
Features ........................................................................................................148
Overview ........................................................................................................148
Timer/Counter Clock Sources .......................................................................149
Counter Unit ..................................................................................................149
Output Compare Unit .....................................................................................150
Compare Match Output Unit ..........................................................................152
Modes of Operation .......................................................................................153
Timer/Counter Timing Diagrams ...................................................................157
ATmega128A
iii