ATTINY24-15SSZ Atmel, ATTINY24-15SSZ Datasheet - Page 36

• Manufacturer Part Number: ATTINY24-15SSZ
• Description: MCU AVR 2K FLASH 15MHZ 14-SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY24-15SSZ

• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 12
• 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 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: USI
• Core Size: 8-Bit
• Cpu Family: ATtiny
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 16MHz
• Interface Type: SPI/UART
• Total Internal Ram Size: 128Byte
• # I/os (max): 12
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 14
• Package Type: SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.7
8.7.1
8.7.2
8.7.3
8.7.4
8.7.5
36
Minimizing Power Consumption
Atmel ATtiny24/44/84 [Preliminary]
Analog-to-Digital Converter
Analog Comparator
Brown-out Detector
Internal Voltage Reference
Watchdog Timer
There are several issues to consider when trying to minimize the power consumption in an
AVR
the sleep mode should be selected so that as few of the device's functions as possible are
operating. All functions not needed should be disabled. In particular, the following modules
may need special consideration when trying to achieve the lowest possible power
consumption.
If enabled, the ADC will be enabled in all sleep modes. To save power, the ADC should be dis-
abled before entering any sleep mode. When the ADC is turned off and on again, the next
conversion will be an extended conversion. See
details on ADC operation.
When entering idle mode, the analog comparator should be disabled if not used. When enter-
ing ADC noise reduction mode, the analog comparator should be disabled. In the other sleep
modes, the analog comparator is automatically disabled. However, if the analog comparator is
set up to use the internal voltage reference as input, the analog comparator should be dis-
abled in all sleep modes. Otherwise, the internal voltage reference will be enabled,
independent of sleep mode. See
figure the Analog Comparator.
If the Brown-out Detector is not needed in the application, this module should be turned off. If
the Brown-out Detector is enabled by the BODLEVEL Fuses, it will be enabled in all sleep
modes, and hence, always consume power. In the deeper sleep modes, this will contribute
significantly to the total current consumption. See
on how to configure the Brown-out Detector.
The Internal Voltage Reference will be enabled when needed by the Brown-out Detection, the
Analog Comparator or the ADC. If these modules are disabled as described in the sections
above, the internal voltage reference will be disabled and it will not be consuming power.
When turned on again, the user must allow the reference to start up before the output is used.
If the reference is kept on in sleep mode, the output can be used immediately. See
Voltage Reference” on page 43
If the Watchdog Timer is not needed in the application, this module should be turned off. If the
Watchdog Timer is enabled, it will be enabled in all sleep modes, and hence, always consume
power. In the deeper sleep modes, this will contribute significantly to the total current con-
sumption. See
Timer.
®
-controlled system. In general, sleep modes should be used as much as possible, and
“Watchdog Timer” on page 43
for details on the start-up time.
“Analog Comparator” on page 133
for details on how to configure the Watchdog
“Analog-to-Digital Converter” on page 136
“Brown-out Detection” on page 42
for details on how to con-
7701D–AVR–09/10
for details
“Internal
for