ATtiny28L Atmel Corporation, ATtiny28L Datasheet - Page 70

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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
Register Summary
Address
Name
Bit 7
$3F
SREG
$3E
Reserved
...
Reserved
$20
Reserved
$1F
Reserved
$1E
Reserved
$1D
Reserved
$1C
Reserved
$1B
PORTA
$1A
PACR
$19
PINA
$18
Reserved
$17
Reserved
$16
PINB
PINB7
$15
Reserved
$14
Reserved
$13
Reserved
$12
PORTD
PORTD7
$11
DDRD
$10
PIND
PIND7
$0F
Reserved
$0E
Reserved
$0D
Reserved
$0C
Reserved
$0B
Reserved
$0A
Reserved
$09
Reserved
$08
ACSR
$07
MCUCS
PLUPB
$06
ICR
$05
IFR
INTF1
$04
TCCR0
$03
TCNT0
Timer/Counter0 (8-bit)
$02
MODCR
ONTIM4
$01
WDTCR
$00
OSCCAL
Oscillator Calibration Register
Notes:
1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses
should never be written.
2. Some of the status flags are cleared by writing a logical “1” to them. Note that the CBI and SBI instructions will operate on all
bits in the I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions work
with registers $00 to $1F only.
ATtiny28L/V
70
Bit 6
Bit 5
Bit 4
I
T
H
S
-
-
-
-
-
-
-
-
-
-
-
-
PINB6
PINB5
PINB4
PORTD6
PORTD5
PORTD4
DDD7
DDD6
DDD5
DDD4
PIND6
PIND5
PIND4
ACD
-
ACO
ACI
-
SE
SM
INT1
INT0
LLIE
TOIE0
INTF0
-
TOV0
FOV0
-
-
OOM01
ONTIM1
ONTIM3
ONTIM2
-
-
-
WDTOE
Bit 3
Bit 2
Bit 1
Bit 0
V
N
Z
C
PORTA3
PORTA2
PORTA1
PORTA0
DDA3
PA2HC
DDA1
DDA0
PINA3
-
PINA1
PINA0
PINB3
PINB2
PINB1
PINB0
PORTD3
PORTD2
PORTD1
PORTD0
DDD3
DDD2
DDD1
DDD0
PIND3
PIND2
PIND1
PIND0
ACIE
-
ACIS1
ACIS0
WDRF
-
EXTRF
PORF
ISC11
ISC10
ISC01
ISC00
-
-
-
-
OOM00
CS02
CS01
CS00
ONTIM0
MCONF2
MCONF1
MCONF0
WDE
WDP2
WDP1
WDP0
Page
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page 44
page 19
page 22
page 23
page 35
page 36
page 43
page 37
page 9
1062F–AVR–07/06

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