ATTINY13A-MUR Atmel, ATTINY13A-MUR Datasheet - Page 26
![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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6.2.3
6.2.4
6.3
26
System Clock Prescaler
ATtiny13A
Internal 128 kHz Oscillator
Default Clock Source
When this Oscillator is selected, start-up times are determined by the SUT fuses as shown in
Table
Table 6-5.
Notes:
The 128 kHz internal Oscillator is a low power Oscillator providing a clock of 128 kHz. The fre-
quency depends on supply voltage, temperature and batch variations. This clock may be select
as the system clock by programming the CKSEL fuses to “11”.
When this clock source is selected, start-up times are determined by the SUT fuses as shown in
Table
Table 6-6.
Note:
The device is shipped with CKSEL = “10”, SUT = “10”, and CKDIV8 programmed. The default
clock source setting is therefore the Internal RC Oscillator running at 9.6 MHz with longest start-
up time and an initial system clock prescaling of 8. This default setting ensures that all users can
make their desired clock source setting using an In-System or High-voltage Programmer.
The ATtiny13A system clock can be divided by setting the
on page
processing power is low. This can be used with all clock source options, and it will affect the
clock frequency of the CPU and all synchronous peripherals. clk
are divided by a factor as shown in
SUT[1:0]
SUT[1:0]
10
00
01
00
01
10
11
11
(1)
6-5.
6-6.
1. The device is shipped with this option selected.
2. If the RSTDISBL fuse is programmed, this start-up time will be increased to 14CK + 4 ms to
1. If the RSTDISBL fuse is programmed, this start-up time will be increased to 14CK + 4 ms to
28. This feature can be used to decrease power consumption when the requirement for
ensure programming mode can be entered.
ensure programming mode can be entered.
Power-down and Power-save
Start-up Times for the Internal Calibrated RC Oscillator Clock Selection
Start-up Times for the 128 kHz Internal Oscillator
from Power-down
Start-up Time from
Start-up Time
6 CK
6 CK
6 CK
6 CK
6 CK
6 CK
Table 6-8 on page
Additional Delay from
Reset (V
14CK + 64 ms
14CK + 4 ms
Additional Delay
Reserved
Reserved
14CK + 64 ms
14CK
14CK + 4 ms
from Reset
CC
14CK
28.
(2)
= 5.0V)
(1)
“CLKPR – Clock Prescale Register”
I/O
, clk
BOD enabled
Fast rising power
Slowly rising power
Recommended Usage
BOD enabled
Fast rising power
Slowly rising power
ADC
, clk
Recommended
CPU
Usage
8126E–AVR–07/10
, and clk
FLASH
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