ATTINY45-15SZ Atmel, ATTINY45-15SZ Datasheet - Page 160

• Manufacturer Part Number: ATTINY45-15SZ
• Description: MCU AVR 4K FLASH 15MHZ 8-SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY45-15SZ

• Package / Case: 8-SOIC (3.9mm Width)
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 6
• Eeprom Size: 256 x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: USI
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

23.2.1
23.2.1.1
160
ATtiny25/45/85
Using the Power Reduction Register
Example 1
The tables and formulas below can be used to calculate the additional current consumption for
the different I/O modules in Active and Idle mode. The enabling or disabling of the I/O modules
are controlled by the Power Reduction Register. See
details.
Table 23-1.
Table 23-2.
It is possible to calculate the typical current consumption based on the numbers from Table 2 for
other V
Calculate the expected current consumption in idle mode with USI, TIMER0, and ADC enabled
at V
for the USI, 7.3% for the TIMER0 module, and 21.4% for the ADC module. Reading from
23-9, we find that the idle current consumption is ~0,25mA at V
total current consumption in idle mode with USI, TIMER0, and ADC enabled, gives:
I
CC
PRR bit
PRTIM1
PRTIM0
PRUSI
PRADC
PRR bit
PRTIM1
PRTIM0
PRUSI
PRADC
total
CC
= 2.0V and F = 1MHz. From
CC
0,25 mA
and frequency settings than listed in Table 1.
Additional Current Consumption for the different I/O modules (absolute values)
Additional Current Consumption (percentage) in Active and Idle mode
Typical numbers
Additional Current consumption
compared to Active with external
clock
(see
1
V
+
CC
0,064
Figure 23-1
= 2V, F = 1MHz
5.0 uA
4.0 uA
43 uA
13 uA
+
0,073
17.3%
1.8 %
1.6 %
5.4 %
and
Table
+
0,214
Figure
23-2, third column, we see that we need to add 6.4%
23-2)
0,337mA
V
CC
= 3V, F = 4MHz
“Power Reduction Register” on page 33
270 uA
28 uA
25 uA
84 uA
Additional Current consumption
compared to Idle with external clock
(see
Figure 23-6
CC
= 3.0V and F = 1MHz. The
68.4 %
21.4 %
V
7.3 %
6.4 %
and
CC
= 5V, F = 8MHz
Figure
1090 uA
116 uA
102 uA
351 uA
7598H–AVR–07/09
23-7)
Figure
for