ATTINY26L-8MUR Atmel, ATTINY26L-8MUR Datasheet - Page 28
ATTINY26L-8MUR
Manufacturer Part Number
ATTINY26L-8MUR
Description
IC MCU AVR 2K 5V 8MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY26L-8MUR
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
32-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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External RC
Oscillator
28
ATtiny26(L)
For timing insensitive applications, the external RC configuration shown in Figure 23 can be
used. The frequency is roughly estimated by the equation f = 1/(3RC). C should be at least 22
pF. By programming the CKOPT Fuse, the user can enable an internal 36 pF capacitor between
XTAL1 and GND, thereby removing the need for an external capacitor.
Figure 23. External RC Configuration
The oscillator can operate in four different modes, each optimized for a specific frequency range.
The operating mode is selected by the fuses CKSEL3..0 as shown in Table 9.
Table 9. External RC Oscillator Operating Modes
When this oscillator is selected, start-up times are determined by the SUT Fuses as shown in
Table 10.
Table 10. Start-up Times for the External RC Oscillator Clock Selection
Notes:
SUT1..0
00
01
10
11
1. This option should not be used when operating close to the maximum frequency of the device.
from Power-down
Start-up Time
CKSEL3..0
6 CK
18 CK
18 CK
18 CK
0101
1000
0110
0111
(1)
Additional Delay from
Reset (V
R
C
V
CC
4.1 ms
4.1 ms
65 ms
CC
–
= 5.0V)
PB5 (XTAL2)
XTAL1
GND
Frequency Range (MHz)
Recommended Usage
BOD enabled
Fast rising power
Slowly rising power
Fast rising power or BOD enabled
8.0 - 12.0
0.1 - 0.9
0.9 - 3.0
3.0 - 8.0
1477K–AVR–08/10
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