ATTINY13A-MUR Atmel, ATTINY13A-MUR Datasheet - Page 48
![MCU AVR 1KB FLASH 20MHZ 20QFN](/photos/6/87/68751/313-20-qfn_sml.jpg)
ATTINY13A-MUR
Manufacturer Part Number
ATTINY13A-MUR
Description
MCU AVR 1KB FLASH 20MHZ 20QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY13A-SSH.pdf
(176 pages)
Specifications of ATTINY13A-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
6
Program Memory Size
1KB (512 x 16)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
64 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Connectivity
-
Lead Free Status / Rohs Status
Details
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- Download datasheet (5Mb)
9.3.3
9.3.4
48
ATtiny13A
GIFR – General Interrupt Flag Register
PCMSK – Pin Change Mask Register
• Bits 7, 4:0 – Res: Reserved Bits
These bits are reserved bits in the ATtiny13A and will always read as zero.
• Bit 6 – INTF0: External Interrupt Flag 0
When an edge or logic change on the INT0 pin triggers an interrupt request, INTF0 becomes set
(one). If the I-bit in SREG and the INT0 bit in GIMSK are set (one), the MCU will jump to the cor-
responding Interrupt Vector. The flag is cleared when the interrupt routine is executed.
Alternatively, the flag can be cleared by writing a logical one to it. This flag is always cleared
when INT0 is configured as a level interrupt.
• Bit 5 – PCIF: Pin Change Interrupt Flag
When a logic change on any PCINT[5:0] pin triggers an interrupt request, PCIF becomes set
(one). If the I-bit in SREG and the PCIE bit in GIMSK are set (one), the MCU will jump to the cor-
responding Interrupt Vector. The flag is cleared when the interrupt routine is executed.
Alternatively, the flag can be cleared by writing a logical one to it.
• Bits 7:6 – Res: Reserved Bits
These bits are reserved bits in the ATtiny13A and will always read as zero.
• Bits 5:0 – PCINT[5:0]: Pin Change Enable Mask 5:0
Each PCINT[5:0] bit selects whether pin change interrupt is enabled on the corresponding I/O
pin. If PCINT[5:0] is set and the PCIE bit in GIMSK is set, pin change interrupt is enabled on the
corresponding I/O pin. If PCINT[5:0] is cleared, pin change interrupt on the corresponding I/O
pin is disabled.
Bit
0x3A
Read/Write
Initial Value
Bit
0x15
Read/Write
Initial Value
R
R
7
–
0
7
–
0
INTF0
R/W
R
6
–
0
6
0
PCINT5
PCIF
R/W
R/W
5
0
5
0
PCINT4
R/W
R
4
0
4
–
0
PCINT3
R/W
R
3
0
3
–
0
PCINT2
R/W
R
2
0
2
–
0
PCINT1
R/W
R
1
0
1
–
0
PCINT0
R/W
0
0
R
0
–
0
8126E–AVR–07/10
PCMSK
GIFR
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