ATtiny13 Atmel Corporation, ATtiny13 Datasheet - Page 56

• Manufacturer Part Number: ATtiny13
• Manufacturer: Atmel Corporation

Specifications of ATtiny13

• Flash (kbytes): 1 Kbytes
• Pin Count: 8
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 6
• Usb Speed: No
• Usb Interface: No
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.06
• Eeprom (bytes): 64
• Self Program Memory: YES
• 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
• Output Compare Channels: 2
• Pwm Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

10.4
10.4.1
10.4.2
10.4.3
56
Register Description
ATtiny13
MCUCR – MCU Control Register
PORTB – Port B Data Register
DDRB – Port B Data Direction Register
Table 10-5.
• Bits 7, 2– Res: Reserved Bits
These bits are reserved bits in the ATtiny13 and will always read as zero.
• Bit 6 – PUD: Pull-up Disable
When this bit is written to one, the pull-ups in the I/O ports are disabled even if the DDxn and
PORTxn Registers are configured to enable the pull-ups ({DDxn, PORTxn} = 0b01). See
figuring the Pin” on page 49
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
PB2/SCK/ADC1/
T0/PCINT2
0
0
0
0
0
0
0
PCINT2 • PCIE + ADC1D
ADC1D
T0/INT0/
PCINT2 Input
ADC1 Input
Overriding Signals for Alternate Functions in PB2:PB0
R
7
–
0
R
R
7
–
0
7
–
0
PUD
R/W
R
R
6
–
0
6
–
0
6
0
for more details about this feature.
PORTB5
DDB5
R/W
R/W
R/W
5
5
0
0
SE
5
0
PB1/MISO/AIN1/
OC0B/INT0/PCINT1
0
0
0
0
OC0B Enable
OC0B
0
PCINT1 • PCIE + AIN1D
AIN1D
PCINT1 Input
Analog Comparator
Negative Input
PORTB4
DDB4
R/W
R/W
4
0
4
0
SM1
R/W
4
0
PORTB3
DDB3
R/W
R/W
3
0
3
0
SM0
R/W
3
0
PORTB2
DDB2
R/W
R/W
2
0
2
0
R
2
–
0
PB0/MOSI/AIN0/
AREF/OC0A/PCINT0
0
0
0
0
OC0A Enable
OC0A
0
PCINT0 • PCIE + AIN0D
AIN0D
PCINT0 Input
Analog Comparator Positive
Input
PORTB1
DDB1
R/W
R/W
ISC01
R/W
1
0
1
0
1
0
PORTB0
DDB0
ISC00
R/W
R/W
R/W
0
0
0
0
0
0
2535J–AVR–08/10
MCUCR
PORTB
DDRB
“Con-