ATTINY26L-8SUR Atmel, ATTINY26L-8SUR Datasheet - Page 27
ATTINY26L-8SUR
Manufacturer Part Number
ATTINY26L-8SUR
Description
IC MCU AVR 2K 5V 8MHZ 20SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY26L-8SUR
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-SOIC (0.300", 7.50mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Low-frequency
Crystal Oscillator
1477K–AVR–08/10
The CKSEL0 Fuse together with the SUT1..0 Fuses select the start-up times as shown in Table
7.
Table 7. Start-up Times for the Crystal Oscillator Clock Selection
Notes:
To use a 32.768 kHz watch crystal as the clock source for the device, the Low-frequency Crystal
Oscillator must be selected by setting the PLLCK to “1” and CKSEL Fuses to “1001”. The crystal
should be connected as shown in Figure 22. By programming the CKOPT Fuse, the user can
enable internal capacitors on XTAL1 and XTAL2, thereby removing the need for external capac-
itors. The internal capacitors have a nominal value of 36 pF.
When this oscillator is selected, start-up times are determined by the SUT Fuses as shown in
Table 8.
Table 8. Start-up Times for the Low-frequency Crystal Oscillator Clock Selection
Note:
CKSEL0
SUT1..0
00
01
10
11
0
0
0
0
1
1
1
1
1. These options should only be used when not operating close to the maximum frequency of the
2. These options are intended for use with ceramic resonators and will ensure frequency stability
1. These options should only be used if frequency stability at start-up is not important for the
device, and only if frequency stability at start-up is not important for the application.
at start-up. They can also be used with crystals when not operating close to the maximum fre-
quency of the device, and if frequency stability at start-up is not important for the application.
application.
from Power-down
SUT1..0
Start-up Time
00
01
10
00
01
10
11
11
1K CK
1K CK
32K CK
(1)
(1)
from Power-down
Start-up Time
258 CK
258 CK
1K CK
1K CK
1K CK
16K CK
16K CK
16K CK
Additional Delay from
(2)
(2)
(2)
Reset (V
(1)
(1)
4.1 ms
65 ms
65 ms
CC
Additional Delay from
Reset (V
= 5.0V)
Reserved
4.1 ms
4.1 ms
4.1 ms
65 ms
65 ms
65 ms
–
CC
–
= 5.0V)
Fast rising power or BOD enabled
Recommended Usage
Slowly rising power
Stable frequency at start-up
Recommended
Usage
Ceramic resonator,
fast rising power
Ceramic resonator,
slowly rising power
Ceramic resonator,
BOD enabled
Ceramic resonator,
fast rising power
Ceramic resonator,
slowly rising power
Crystal Oscillator,
BOD enabled
Crystal Oscillator, fast
rising power
Crystal Oscillator,
slowly rising power
27
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