ATTINY26L-8PU Atmel, ATTINY26L-8PU Datasheet - Page 25

• Manufacturer Part Number: ATTINY26L-8PU
• Description: IC MCU AVR 2K 5V 8MHZ 20-DIP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY26L-8PU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Processor Series: ATTINY2x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: 2-Wire/ISP/SM-Bus/SPI/UART/USI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 2
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 11-ch x 10-bit
• Controller Family/series: AVR Tiny
• No. Of I/o's: 16
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 128Byte
• Cpu Speed: 8MHz
• Rohs Compliant: Yes
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK505 - ADAPTER KIT FOR 14PIN AVR MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ATTINY26L-8PJ; ATTINY26L-8PJ

Default Clock Source
Crystal Oscillator
1477F–AVR–12/04
each time-out is shown in Table 5. The frequency of the Watchdog Oscillator is voltage
dependent as shown in the Electrical Characteristics section.
Table 5. Number of Watchdog Oscillator Cycles
The deviced is shipped with CKSEL = “0001”, SUT = “10”, and PLLCK unprogrammed.
The default clock source setting is therefore the internal RC Oscillator with longest star-
tup time. This default setting ensures that all users can make their desired clock source
setting using an In-System or Parallel Programmer.
XTAL1 and XTAL2 are input and output, respectively, of an inverting amplifier which can
be configured for use as an On-chip Oscillator, as shown in Figure 22. Either a quartz
crystal or a ceramic resonator may be used. The maximum frequency for resonators is
12 MHz. The CKOPT Fuse should always be unprogrammed when using this clock
option. C1 and C2 should always be equal. The optimal value of the capacitors depends
on the crystal or resonator in use, the amount of stray capacitance, and the electromag-
netic noise of the environment. Some initial guidelines for choosing capacitors for use
with crystals are given in Table 6. For ceramic resonators, the capacitor values given by
the manufacturer should be used.
Figure 22. Crystal Oscillator Connections
The Oscillator can operate in three different modes, each optimized for a specific fre-
quency range. The operating mode is selected by the fuses CKSEL3..1 as shown in
Table 6.
Table 6. Crystal Oscillator Operating Modes
Note:
CKSEL3..1
Typ Time-out (V
101
110
111
(1)
1. This option should not be used with crystals, only with ceramic resonators.
4.1 ms
65 ms
CC
Range (MHz)
Frequency
= 5.0V)
0.4 - 0.9
0.9 - 3.0
3.0 - 16
16 -
Typ Time-out (V
C2
C1
Recommended Range for Capacitors C1 and
4.3 ms
69 ms
C2 for Use with Crystals (pF)
CC
XTAL2
XTAL1
GND
= 3.0V)
12 - 22
12 - 22
12 - 15
–
ATtiny26(L)
Number of Cycles
64K (65,536)
4K (4,096)
25