ATTINY861-15MZ Atmel, ATTINY861-15MZ Datasheet - Page 170

• Manufacturer Part Number: ATTINY861-15MZ
• Description: MCU AVR 8K FLASH 15MHZ 32-QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY861-15MZ

• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 16
• 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 11x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: USI
• Core Size: 8-Bit
• Processor Series: ATTINY8x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SPI
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 16
• 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, ATAVRMC320
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 11 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

22.2.1
22.3
22.4
170
Signature Bytes
Calibration Byte
ATtiny261/461/861
Latching of Fuses
Table 22-5.
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.
All Atmel microcontrollers have a three-byte signature code which identifies the device. This
code can be read in both serial and High-voltage Programming mode, also when the device is
locked. The three bytes reside in a separate address space. The ATtiny261/461/861signature
bytes are given in
Table 22-6.
Signature area of the ATtiny261/461/861 has one byte of calibration data for the internal RC
Oscillator. This byte resides in the high byte of address 0x000. During reset, this byte is auto-
matically written into the OSCCAL Register to ensure correct frequency of the calibrated RC
Oscillator.
Fuse Low Byte
CKDIV8
CKOUT
SUT1
SUT0
CKSEL3
CKSEL2
CKSEL1
CKSEL0
Parts
ATtiny261
ATtiny461
ATtiny861
1. See
2. The CKOUT Fuse allows the system clock to be output on PORTB5. 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 CKSEL3..0 results in internal RC Oscillator @ 8.0 MHz. See
(2)
(1)
on page 30 for details.
See
on page 28
Fuse Low Byte
Device ID
”System Clock Prescaler” on page 31
Table 7-7 on page 28
Table
Bit No
for details.
7
6
5
4
3
2
1
0
22-6.
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
0x000
0x1E
0x1E
0x1E
for details.
Signature Bytes Address
for details.
0x001
0x91
0x92
0x93
0 (programmed)
0 (programmed)
0 (programmed)
Default Value
0 (programmed)
1 (unprogrammed)
1 (unprogrammed)
0 (programmed)
1 (unprogrammed)
0x002
0x0C
0x0D
0x08
(3)
(4)
(4)
(4)
2588B–AVR–11/06
(3)
(4)
Table 7-6