ATtiny24A Atmel Corporation, ATtiny24A Datasheet - Page 102

• Manufacturer Part Number: ATtiny24A
• Manufacturer: Atmel Corporation

Specifications of ATtiny24A

• Flash (kbytes): 2 Kbytes
• Pin Count: 14
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 4
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 12
• Ext Interrupts: 12
• 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): 0.12
• Eeprom (bytes): 128
• 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: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

102
ATtiny24A/44A/84A
Figure 12-11. Timer/Counter Timing Diagram, Setting of OCF1x, with Prescaler (f
Figure 12-12
frequency correct PWM mode the OCR1x Register is updated at BOTTOM. The timing diagrams
will be the same, but TOP should be replaced by BOTTOM, TOP-1 by BOTTOM+1 and so on.
The same renaming applies for modes that set the TOV1 flag at BOTTOM.
Figure 12-12. Timer/Counter Timing Diagram, no Prescaling
Figure 12-13 on page 103
(PC and PFC PWM)
OCRnx
TCNTn
OCFnx
(clk
and ICFn
(CTC and FPWM)
clk
(Update at TOP)
clk
TOVn
I/O
I/O
Tn
OCRnx
TCNTn
TCNTn
(clk
as TOP)
/8)
clk
clk
I/O
(FPWM)
I/O
Tn
/1)
(if used
shows the count sequence close to TOP in various modes. When using phase and
OCRnx - 1
TOP - 1
TOP - 1
shows the same timing data, but with the prescaler enabled.
Old OCRnx Value
OCRnx
OCRnx Value
TOP
TOP
OCRnx + 1
BOTTOM
TOP - 1
New OCRnx Value
BOTTOM + 1
OCRnx + 2
8183D–AVR–04/11
TOP - 2
clk_I/O
/8)