ATTINY84-20SSU Atmel, ATTINY84-20SSU Datasheet - Page 186

• Manufacturer Part Number: ATTINY84-20SSU
• Description: MCU AVR 8K ISP FLASH 2.7V 14SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY84-20SSU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 12
• 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Processor Series: ATTINY8x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Operating Supply Voltage: 2.7 V to 5.5 V
• 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: 8-ch x 10-bit
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.1.1
21.2
186
Active Supply Current
ATtiny24/44/84
Example
Table 21-2.
Calculate the expected current consumption in idle mode with USI, TIMER0, and ADC enabled
at V
add 6.1% for the USI, 10.4% for TIMER0, and 28.8% for the ADC. Reading from
page 189
total current consumption in idle mode with USI, TIMER0, and ADC enabled is therefore:
Figure 21-1. Active Supply Current vs. Low Frequency (0.1 - 1.0 MHz)
I
CCTOT
PRR bit
PRTIM1
PRTIM0
PRUSI
PRADC
CC
= 2.0V and f = 1MHz. From
≈
0,04mA
, we find that current consumption in idle mode at 2V and 1MHz is about 0.04mA. The
1.2
0.8
0.6
0.4
0.2
1
0
0
Additional Current Consumption (percentage) in Active and Idle mode
×
(
1
Current consumption additional to
active mode with external clock
(see
+
0.1
0,061
Figure 21-1
0.2
+
0,104
0.3
Table 21-2 on page
+
1.8 %
2.3 %
1.4 %
6.7 %
ACTIVE SUPPLY CURRENT vs. LOW FREQUENCY
and
0,288
Figure
0.4
)
Frequency (MHz)
≈
0,06mA
21-2)
0.5
(PRR=0xFF)
0.6
186, third column, we see that we need to
Current consumption additional to
idle mode with external clock
(see
0.7
Figure 21-6
0.8
0.9
10.4 %
28.8 %
8.0 %
6.1 %
and
Figure
1
5.5 V
5.0 V
4.5 V
4.0 V
3.3 V
2.7 V
1.8 V
8006K–AVR–10/10
Figure 21-6 on
21-7)