ATTINY28L-4AI Atmel, ATTINY28L-4AI Datasheet - Page 40

• Manufacturer Part Number: ATTINY28L-4AI
• Description: IC AVR MCU 2KFLSH 4MHZ 3V 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY28L-4AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 11
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Ram Size: -
• Data Converters: -
• Connectivity: -

40
ATtiny28L/V
Figure 31. The Hardware Modulator
Figure 32 to Figure 35 show examples on output from the Modulator. Figure 32 also
shows the timing for the enable setting signal and for the count enable signal to
Timer/Counter0.
Figure 32. Modulation with ONTIM = 3, MCONF = 010.
Note:
Figure 33. Modulation with ONTIM = 5, MCONF = 001
Note:
WM: WRITE MODCR
RM: READ MODCR
RM
8
5
3
/
/
/
WM
SETTING
1. Clock frequency: 455 kHz; modulation frequency: 38 kHz; duty-cycle: 33%
Clock frequency: 455 kHz; modulation frequency: 38 kHz; duty-cycle: 50%
ENABLE
ENABLE
COUNT
CLK
PA2
FROM
PORTA2
CLK
PA2
5
3
5
3
/
/
ENABLE SETTING
MODULATOR
D
MACHINE
STATE
Q
DISABLE
MODUALTOR
COUNT ENABLE
TO TIMER/COUNTER0
1062F–AVR–07/06
0
1
PA2