ATTINY25V-10SH Atmel, ATTINY25V-10SH Datasheet - Page 26
![IC MCU AVR 2KB FLASH 10MHZ 8SOIC](/photos/6/50/65032/453-8-soic_sml.jpg)
ATTINY25V-10SH
Manufacturer Part Number
ATTINY25V-10SH
Description
IC MCU AVR 2KB FLASH 10MHZ 8SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY25-20MU.pdf
(236 pages)
Specifications of ATTINY25V-10SH
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
6
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)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
Processor Series
ATtiny
Core
AVR
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
SPI, USI
Maximum Clock Frequency
10 MHz
Number Of Programmable I/os
6
Number Of Timers
2
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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6.2.1
6.2.2
26
ATtiny25/45/85
External Clock
High Frequency PLL Clock
mal operation. The Watchdog Oscillator is used for timing this real-time part of the start-up time.
The number of WDT Oscillator cycles used for each time-out is shown in
Table 6-2.
To drive the device from an external clock source, CLKI should be driven as shown in
4. To run the device on an external clock, the CKSEL Fuses must be programmed to “00”.
Figure 6-4.
When this clock source is selected, start-up times are determined by the SUT Fuses as shown in
Table
Table 6-3.
When applying an external clock, it is required to avoid sudden changes in the applied clock fre-
quency to ensure stable operation of the MCU. A variation in frequency of more than 2% from
one clock cycle to the next can lead to unpredictable behavior. It is required to ensure that the
MCU is kept in Reset during such changes in the clock frequency.
Note that the System Clock Prescaler can be used to implement run-time changes of the internal
clock frequency while still ensuring stable operation. Refer to
31
There is an internal PLL that provides nominally 64 MHz clock rate locked to the RC Oscillator
for the use of the Peripheral Timer/Counter1 and for the system clock source. When selected as
SUT[1:0]
for details.
00
01
10
11
6-3.
Typ Time-out
Number of Watchdog Oscillator Cycles
External Clock Drive Configuration
Start-up Times for the External Clock Selection
64 ms
Start-up Time from
4 ms
Power-down
6 CK
6 CK
6 CK
EXTERNAL
SIGNAL
CLOCK
Additional Delay from
Reserved
14CK + 64 ms
14CK + 4 ms
CLKI
GND
Reset
14CK
Number of Cycles
“System Clock Prescaler” on page
8K (8,192)
512
BOD enabled
Fast rising power
Slowly rising power
Recommended Usage
Table
6-2.
2586M–AVR–07/10
Figure 6-
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