ATTINY85-15ST1 Atmel, ATTINY85-15ST1 Datasheet - Page 25

MCU AVR 8K FLASH 15MHZ 8-SOIC

ATTINY85-15ST1

Manufacturer Part Number
ATTINY85-15ST1
Description
MCU AVR 8K FLASH 15MHZ 8-SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet

Specifications of ATTINY85-15ST1

Package / Case
8-SOIC (3.9mm Width)
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 105°C
Speed
16MHz
Number Of I /o
6
Eeprom Size
512 x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
512 x 8
Program Memory Size
8KB (8K x 8)
Data Converters
A/D 4x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
USI
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
6.5
7598H–AVR–07/09
Low-frequency Crystal Oscillator
Table 6-4.
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 CKSEL fuses to ‘0110’. The crystal should be connected
as shown in
oscillator operation and how to choose appropriate values for C1 and C2.
When this oscillator is selected, start-up times are determined by the SUT fuses as shown in
Table
Table 6-5.
Notes:
CKSEL0
SUT1..0
00
01
10
11
0
0
0
0
1
1
1
1
6-5.
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. These
options are not suitable for crystals.
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.
Figure
Power Down and Power
SUT1..0
Start-up Times for the Crystal Oscillator Clock Selection
Start-up Times for the Low Frequency Crystal Oscillator Clock Selection
Start-up Time from
00
01
10
11
00
01
10
11
6-3. Refer to the 32 kHz Crystal Oscillator Application Note for details on
1K CK
1K CK
32K CK
Save
Start-up Time from
(1)
(1)
Power-down and
Power-save
258 CK
258 CK
1K CK
1K CK
1K CK
16K CK
16K CK
16K CK
(2)
(2)
(2)
(1)
(1)
Additional Delay from
Power On Reset
(V
CC
64 ms
64 ms
4 ms
Reserved
Additional Delay
= 5.0V)
14CK + 64 ms
14CK + 64 ms
14CK + 64 ms
14CK + 4 ms
14CK + 4 ms
14CK + 4 ms
(V
from Reset
CC
14CK
14CK
= 5.0V)
Recommended usage
Fast rising power or BOD
enabled
Slowly rising power
Stable frequency at start-up
ATtiny25/45/85
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
25

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