ATtiny48 Atmel Corporation, ATtiny48 Datasheet - Page 295

• Manufacturer Part Number: ATtiny48
• Manufacturer: Atmel Corporation

Specifications of ATtiny48

• Flash (kbytes): 4 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 12 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 28
• Ext Interrupts: 28
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• 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: Yes
• Crypto Engine: No
• Sram (kbytes): 0.25
• Eeprom (bytes): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

Table of Contents
8008H–AVR–04/11
1
2
3
4
5
6
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 5
General Information ................................................................................. 7
AVR CPU Core .......................................................................................... 8
Memories ................................................................................................ 17
Clock System ......................................................................................... 28
1.1
2.1
2.2
3.1
3.2
3.3
3.4
3.5
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.1
5.2
5.3
5.4
6.1
6.2
6.3
6.4
Pin Descriptions .................................................................................................3
Block Diagram ...................................................................................................5
Comparison Between ATtiny48 and ATtiny88 ...................................................6
Resources .........................................................................................................7
About Code Examples .......................................................................................7
Capacitive Touch Sensing .................................................................................7
Data Retention ...................................................................................................7
Disclaimer ..........................................................................................................7
Introduction ........................................................................................................8
Architectural Overview .......................................................................................8
ALU – Arithmetic Logic Unit ...............................................................................9
Status Register ..................................................................................................9
General Purpose Register File ........................................................................10
Stack Pointer ...................................................................................................11
Instruction Execution Timing ...........................................................................12
Reset and Interrupt Handling ...........................................................................12
Register Description ........................................................................................15
Program Memory (Flash) .................................................................................17
Data Memory (SRAM) and Register Files .......................................................18
Data Memory (EEPROM) ................................................................................20
Register Description ........................................................................................25
Clock Subsystems ...........................................................................................28
Clock Sources .................................................................................................29
System Clock Prescaler ..................................................................................31
Clock Output Buffer .........................................................................................32
ATtiny48/88
i