ATmega128A Atmel Corporation, ATmega128A Datasheet - Page 380
ATmega128A
Manufacturer Part Number
ATmega128A
Description
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
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ii
ATmega128A
9
10 System Control and Reset .................................................................... 51
11 Interrupts ................................................................................................ 59
12 I/O Ports .................................................................................................. 65
13 External Interrupts ................................................................................. 90
14 8-bit Timer/Counter0 with PWM and Asynchronous Operation ........ 93
Power Management and Sleep Modes ................................................. 46
8.8
8.9
8.10
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
9.10
10.1
10.2
10.3
10.4
10.5
10.6
11.1
11.2
12.1
12.2
12.3
12.4
13.1
14.1
14.2
External Clock .................................................................................................43
Timer/Counter Oscillator ..................................................................................44
Register Description ........................................................................................44
Overview ..........................................................................................................46
Sleep modes ....................................................................................................46
Idle Mode .........................................................................................................47
ADC Noise Reduction Mode ............................................................................47
Power-down Mode ...........................................................................................47
Power-save Mode ............................................................................................47
Standby Mode .................................................................................................48
Extended Standby Mode .................................................................................48
Minimizing Power Consumption ......................................................................48
Register Description ........................................................................................50
Resetting the AVR ...........................................................................................51
Reset Sources .................................................................................................51
Internal Voltage Reference ..............................................................................54
Watchdog Timer ..............................................................................................55
Timed Sequences for Changing the Configuration of the Watchdog Timer ....55
Register Description ........................................................................................56
Interrupt Vectors in ATmega128A ...................................................................59
Register Description ........................................................................................63
Introduction ......................................................................................................65
Ports as General Digital I/O .............................................................................66
Alternate Port Functions ..................................................................................71
Register Description ........................................................................................86
Register Description ........................................................................................90
Features ..........................................................................................................93
Overview ..........................................................................................................93
8151H–AVR–02/11