ATTINY861-15MZ Atmel, ATTINY861-15MZ Datasheet - Page 92

• 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

16.2.1
16.2.2
16.2.3
92
ATtiny261/461/861
Speed
Accuracy
Registers
Figure 16-1. Timer/Counter1 Block Diagram
The maximum speed of the Timer/Counter1 is 64 MHz. However, if a supply voltage below 2.7
volts is used, it is highly recommended to use the Low Speed Mode (LSM), because the
Timer/Counter1 is not running fast enough on low voltage levels. In the Low Speed Mode the
fast peripheral clock is scaled down to 32 MHz. For more details about the Low Speed Mode,
see
The Timer/Counter1 is a 10-bit Timer/Counter module that can alternatively be used as an 8-bit
Timer/Counter. The Timer/Counter1 registers are basically 8-bit registers, but on top of that
there is a 2-bit High Byte Register (TC1H) that can be used as a common temporary buffer to
access the two MSBs of the 10-bit Timer/Counter1 registers by the AVR CPU via the 8-bit data
bus, if the 10-bit accuracy is used. Whereas, if the two MSBs of the 10-bit registers are written to
zero the Timer/Counter1 is working as an 8-bit Timer/Counter. When reading the low byte of any
8-bit register the two MSBs are written to the TC1H register, and when writing the low byte of
any 8-bit register the two MSBs are written from the TC1H register. Special procedures must be
followed when accessing the 10-bit Timer/Counter1 values via the 8-bit data bus. These proce-
dures are described in the section
The Timer/Counter (TCNT1) and Output Compare Registers (OCR1A, OCR1B, OCR1C and
OCR1D) are 8-bit registers that are used as a data source to be compared with the TCNT1 con-
tents. The OCR1A, OCR1B and OCR1D registers determine the action on the OC1A, OC1B and
OC1D pins and they can also generate the compare match interrupts. The OCR1C holds the
TOV1
REGISTER (TIMSK)
T/C INT. MASK
”PLLCSR – PLL Control and Status Register” on page
TIMER/COUNTER1
8-BIT OUTPUT COMPARE
COMPARE REGISTER A
10-BIT COMPARATOR
REGISTER A (OCR1A)
(TCNT1)
OCF1A
10-BIT OUTPUT
OCF1B
REGISTER (TIFR)
T/C INT. FLAG
CLK
COUNT
CLEAR
DIRECTION
OCF1D
8-BIT OUTPUT COMPARE
10-BIT COMPARATOR
COMPARE REGISTER B
REGISTER B (OCR1B)
10-BIT OUTPUT
DEAD TIME GENERATOR
OC1A
REGISTER A (TCCR1A)
”Accessing 10-Bit Registers” on page
T/C CONTROL
8-BIT DATABUS
OC1A
8-BIT OUTPUT COMPARE
COMPARE REGISTER C
10-BIT COMPARATOR
REGISTER C (OCR1C)
10-BIT OUTPUT
DEAD TIME GENERATOR
OC1B
REGISTER B (TCCR1B)
TIMER/COUNTER1 CONTROL LOGIC
T/C CONTROL
OC1B
89.
8-BIT OUTPUT COMPARE
COMPARE REGISTER D
REGISTER D (OCR1D)
10-BIT COMPARATOR
10-BIT OUTPUT
REGISTER C (TCCR1C)
DEAD TIME GENERATOR
OC1D
T/C CONTROL
110.
OC1D
2-BIT HIGH BYTE
REGISTER (TC1H)
REGISTER D (TCCR1E)
REGISTER C (TCCR1D)
2588B–AVR–11/06
FAULT_PROTECTION
T/C CONTROL
T/C CONTROL