ATtiny28L Atmel Corporation, ATtiny28L Datasheet - Page 41

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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
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1062F–AVR–07/06
Figure 34. Modulation with ONTIM = 1, MCONF = 011
Note:
Figure 35. Modulation with ONTIM = 3, MCONF = 001
Note:
Table 17. Some Common Modulator Configurations
Crystal/Resonator
Frequency
455 kHz
455 kHz
455 kHz
455 kHz
455 kHz
1 MHz
1.8432 MHz
1.8432 MHz
1.8432 MHz
2 MHz
2 MHz
2.4576 MHz
3.2768 MHz
4 MHz
455 kHz
1 MHz
1.82 MHz
1.82 MHz
1.8432 MHz
1.8432 MHz
2 MHz
Clock frequency: 3.64 MHz; modulation frequency: 455 kHz; duty-cycle: 25%
Clock frequency: 3.64 MHz; modulation frequency: 455 kHz; duty-cycle: 50%
CLK
PA2
CLK
PA2
Carrier
Frequency
455 kHz
455 kHz
455 kHz
455 kHz
455 kHz
455 kHz
455 kHz
38 kHz
38 kHz
38 kHz
38 kHz
38 kHz
38 kHz
38 kHz
38 kHz
38 kHz
38 kHz
38 kHz
38 kHz
38 kHz
38 kHz
% Error in
Frequency
0.2
0.2
0.2
0.2
0.2
1.2
1.1
1.1
1.1
1.2
1.2
1.1
2.0
1.2
0.0
9.9
0.0
0.0
1.3
1.3
9.9
Duty-cycle
approx. 50%
25%
33%
50%
67%
75%
50%
25%
33%
50%
25%
50%
50%
25%
25%
50%
25%
50%
25%
50%
25%
ATtiny28L/V
ONTIM
Value
12
11
15
23
12
25
31
21
25
2
3
5
3
2
X
0
0
1
0
1
0
MCONF
Value
011
010
001
100
101
001
011
010
001
011
001
001
011
011
111
001
011
001
011
001
011
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