ATTINY861-20MU Atmel, ATTINY861-20MU Datasheet - Page 116

• Manufacturer Part Number: ATTINY861-20MU
• Description: IC MCU AVR 8K FLASH 20MHZ 32-QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY861-20MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Processor Series: ATTINY8x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: 2-Wire, SPI, USI
• Maximum Clock Frequency: 20 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
• Package: 32MLF EP
• Device Core: AVR
• Family Name: ATtiny
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 3.3|5 V
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRBC100 - REF DESIGN KIT BATTERY CHARGER770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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ATtiny261/461/861
The dedicated Dead Time prescaler in front of the Dead Time Generator can divide the
Timer/Counter1 clock (PCK or CK) by 1, 2, 4 or 8 providing a large range of dead times that can
be generated. The Dead Time prescaler is controlled by two bits DTPS11 and DTPS10 from the
Dead Time Prescaler register. These bits define the division factor of the Dead Time prescaler.
The division factors are given in
Table 12-16. Division factors of the Dead Time prescaler
• Bits 3:0 – CS13, CS12, CS11, CS10: Clock Select Bits 3, 2, 1, and 0
The Clock Select bits 3, 2, 1, and 0 define the prescaling source of Timer/Counter1.
Table 12-17. Timer/Counter1 Prescaler Select
The Stop condition provides a Timer Enable/Disable function.
CS13
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
DTPS11
0
0
1
1
CS12
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
CS11
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
DTPS10
0
1
0
1
CS10
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Table
Asynchronous Clocking Mode
T/C1 stopped
PCK
PCK/2
PCK/4
PCK/8
PCK/16
PCK/32
PCK/64
PCK/128
PCK/256
PCK/512
PCK/1024
PCK/2048
PCK/4096
PCK/8192
PCK/16384
Prescaler divides the T/C1 clock by
1x (no division)
2x
4x
8x
12-16.
Synchronous Clocking Mode
T/C1 stopped
CK
CK/2
CK/4
CK/8
CK/16
CK/32
CK/64
CK/128
CK/256
CK/512
CK/1024
CK/2048
CK/4096
CK/8192
CK/16384
2588E–AVR–08/10