ATtiny28L Atmel Corporation, ATtiny28L Datasheet - Page 40

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ATtiny28L

Manufacturer Part Number
ATtiny28L
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATtiny28L

Flash (kbytes)
2 Kbytes
Pin Count
28
Max. Operating Frequency
4 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
11
Ext Interrupts
10
Usb Speed
No
Usb Interface
No
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.03
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
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
1
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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

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