ATtiny28L Atmel Corporation, ATtiny28L Datasheet - Page 33

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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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Port D Data Register – PORTD
Port D Data Direction Register
– DDRD
Port D Input Pins Address –
PIND
1062F–AVR–07/06
The Port D Input Pins Address (PIND) is not a register; this address enables access to
the physical value on each Port D pin. When reading PORTD, the Port D Data Latch is
read and when reading PIND, the logical values present on the pins are read.
Bit
$12
Read/Write
Initial Value
Bit
$11
Read/Write
Initial Value
Bit
$10
Read/Write
Initial Value
PORTD7
PIND7
DDD7
R/W
R/W
N/A
R
7
0
7
0
7
PORTD6
PIND6
DDD6
R/W
R/W
N/A
R
6
0
6
0
6
PORTD5
PIND5
DDD5
R/W
R/W
N/A
R
5
0
5
0
5
PORTD4
PIND4
DDD4
R/W
R/W
N/A
R
4
0
4
0
4
PORTD3
PIND3
DDD3
R/W
R/W
N/A
3
0
3
0
3
R
PORTD2
PIND2
DDD2
R/W
R/W
N/A
R
2
0
2
0
2
PORTD1
ATtiny28L/V
PIND1
DDD1
R/W
R/W
N/A
R
1
0
1
0
1
PORTD0
PIND0
DDD0
R/W
R/W
N/A
R
0
0
0
0
0
PORTD
DDRD
PIND
33

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