ATtiny48 Atmel Corporation, ATtiny48 Datasheet - Page 298

• 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

iv
ATtiny48/88
17 ADC – Analog to Digital Converter ..................................................... 164
18 debugWIRE On-Chip Debug System .................................................. 181
19 Self-Programming the Flash ............................................................... 183
20 Lock Bits, Fuse Bits and Device Signature ....................................... 188
21 External Programming ........................................................................ 191
17.1
17.2
17.3
17.4
17.5
17.6
17.7
17.8
17.9
17.10
17.11
17.12
17.13
18.1
18.2
18.3
18.4
18.5
18.6
19.1
19.2
20.1
20.2
20.3
20.4
21.1
21.2
21.3
21.4
Features ........................................................................................................164
Overview ........................................................................................................164
Operation .......................................................................................................165
Starting a Conversion ....................................................................................166
Prescaling and Conversion Timing ................................................................167
Changing Channel or Reference Selection ...................................................170
ADC Noise Canceler .....................................................................................171
Analog Input Circuitry ....................................................................................171
Analog Noise Canceling Techniques .............................................................172
ADC Accuracy Definitions .............................................................................173
ADC Conversion Result .................................................................................175
Temperature Measurement ...........................................................................175
Register Description ......................................................................................176
Features ........................................................................................................181
Overview ........................................................................................................181
Physical Interface ..........................................................................................181
Software Break Points ...................................................................................182
Limitations of debugWIRE .............................................................................182
Register Description ......................................................................................182
Addressing the Flash During Self-Programming ...........................................184
Register Description ......................................................................................186
Lock Bits ........................................................................................................188
Fuse Bits ........................................................................................................189
Signature Bytes .............................................................................................190
Calibration Byte .............................................................................................190
Memory Parametrics .....................................................................................191
Parallel Programming ....................................................................................191
Serial Programming .......................................................................................200
Programming Time for Flash and EEPROM .................................................205
8008H–AVR–04/11