ATTINY45-15SZ Atmel, ATTINY45-15SZ Datasheet - Page 58
![MCU AVR 4K FLASH 15MHZ 8-SOIC](/photos/6/50/65032/453-8-soic_sml.jpg)
ATTINY45-15SZ
Manufacturer Part Number
ATTINY45-15SZ
Description
MCU AVR 4K FLASH 15MHZ 8-SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY25-15MZ.pdf
(196 pages)
Specifications of ATTINY45-15SZ
Package / Case
8-SOIC (3.9mm Width)
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Number Of I /o
6
Eeprom Size
256 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
256 x 8
Program Memory Size
4KB (4K x 8)
Data Converters
A/D 4x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATTINY45-15SZ
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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10.4
10.4.1
10.4.2
10.4.3
11. External Interrupts
58
Register Description for I/O-Ports
ATtiny25/45/85
Port B Data Register – PORTB
Port B Data Direction Register – DDRB
Port B Input Pins Address – PINB
The External Interrupts are triggered by the INT0 pin or any of the PCINT5..0 pins. Observe that,
if enabled, the interrupts will trigger even if the INT0 or PCINT5..0 pins are configured as out-
puts. This feature provides a way of generating a software interrupt. Pin change interrupts PCI
will trigger if any enabled PCINT5..0 pin toggles. The PCMSK Register control which pins con-
tribute to the pin change interrupts. Pin change interrupts on PCINT5..0 are detected
asynchronously. This implies that these interrupts can be used for waking the part also from
sleep modes other than Idle mode.
The INT0 interrupts can be triggered by a falling or rising edge or a low level. This is set up as
indicated in the specification for the MCU Control Register – MCUCR. When the INT0 interrupt is
enabled and is configured as level triggered, the interrupt will trigger as long as the pin is held
low. Note that recognition of falling or rising edge interrupts on INT0 requires the presence of an
I/O clock, described in
INT0 is detected asynchronously. This implies that this interrupt can be used for waking the part
also from sleep modes other than Idle mode. The I/O clock is halted in all sleep modes except
Idle mode.
Note that if a level triggered interrupt is used for wake-up from Power-down, the required level
must be held long enough for the MCU to complete the wake-up to trigger the level interrupt. If
the level disappears before the end of the Start-up Time, the MCU will still wake up, but no inter-
rupt will be generated. The start-up time is defined by the SUT and CKSEL Fuses as described
in
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
“System Clock and Clock Options” on page
R
R
R
7
–
0
7
–
0
7
–
0
“Clock Systems and their Distribution” on page
R
R
R
6
–
0
6
0
6
–
0
–
PORTB5
PINB5
DDB5
R/W
R/W
R/W
N/A
5
0
5
0
5
PORTB4
PINB4
DDB4
R/W
R/W
R/W
N/A
4
0
4
4
0
21.
PORTB3
PINB3
DDB3
R/W
R/W
R/W
N/A
3
0
3
0
3
PORTB2
PINB2
DDB2
R/W
R/W
R/W
N/A
2
0
2
2
0
PORTB1
PINB1
21. Low level interrupt on
DDB1
R/W
R/W
R/W
N/A
1
0
1
0
1
PORTB0
PINB0
DDB0
R/W
R/W
R/W
N/A
0
0
0
0
0
7598H–AVR–07/09
PORTB
DDRB
PINB
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