ATTINY25-15MZ Atmel, ATTINY25-15MZ Datasheet - Page 136

• Manufacturer Part Number: ATTINY25-15MZ
• Description: MCU AVR 2K FLASH 15MHZ 20-QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY25-15MZ

• Package / Case: 20-QFN
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 6
• Eeprom Size: 128 x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Program Memory Size: 2KB (2K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: USI
• Core Size: 8-Bit
• Processor Series: ATTINY2x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: UART, SPI, USI
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 6
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 4 Channel
• Data Rom Size: 128 B
• A/d Bit Size: 10 bit
• A/d Channels Available: 4
• Height: 0.75 mm
• Length: 4 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Width: 4 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.2.1
136
ATtiny25/45/85
Latching of Fuses
Table 21-4.
Notes:
Table 21-5.
Notes:
The status of the Fuse bits is not affected by Chip Erase. Note that the Fuse bits are locked if
Lock bit1 (LB1) is programmed. Program the Fuse bits before programming the Lock bits.
The fuse values are latched when the device enters programming mode and changes of the
fuse values will have no effect until the part leaves Programming mode. This does not apply to
the EESAVE Fuse which will take effect once it is programmed. The fuses are also latched on
Power-up in Normal mode.
BODLEVEL2
BODLEVEL1
BODLEVEL0
Fuse Low Byte
CKDIV8
CKOUT
SUT1
SUT0
CKSEL3
CKSEL2
CKSEL1
CKSEL0
Fuse High Byte
1. See
2. DWEN must be unprogrammed when Lock Bit security is required.
3. The SPIEN Fuse is not accessible in SPI Programming mode.
4. See
5. See
6. When programming the RSTDISBL Fuse, High-voltage Serial programming has to be used to
1. See
2. The CKOUT Fuse allows the system clock to be output on PORTB4. See “Clock Output Buffer”
3. The default value of SUT1..0 results in maximum start-up time for the default clock source.
4. The default setting of CKSEL1..0 results in internal RC Oscillator @ 8.0 MHz. See
(2)
(1)
Fuses.
Memory Lock Bits” on page 134.
change fuses to perform further programming.
on page 30 for details.
See
on page 26
(5)
(5)
(5)
Fuse High Byte
Fuse Low Byte
“Alternate Functions of Port B” on page 54
“Watchdog Timer Control Register – WDTCR” on page 42
Table 8-2 on page 38
“System Clock Prescaler” on page 29
Table 6-7 on page 26
Bit No
Bit No
for details.
2
1
0
7
6
5
4
3
2
1
0
Description
Brown-out Detector trigger level
Brown-out Detector trigger level
Brown-out Detector trigger level
Description
Divide clock by 8
Clock Output Enable
Select start-up time
Select start-up time
Select Clock source
Select Clock source
Select Clock source
Select Clock source
for BODLEVEL Fuse decoding.
for details.
for details.
for description of RSTDISBL and DWEN
Default Value
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
Default Value
0 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
0 (programmed)
0 (programmed)
0 (programmed)
1 (unprogrammed)
0 (programmed)
for details.
See “Program And Data
(3)
(4)
(4)
(4)
7598H–AVR–07/09
(3)
(4)
Table 6-6