AT90PWM3B Atmel Corporation, AT90PWM3B Datasheet - Page 314
AT90PWM3B
Manufacturer Part Number
AT90PWM3B
Description
Manufacturer
Atmel Corporation
Specifications of AT90PWM3B
Flash (kbytes)
8 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
8
Hardware Qtouch Acquisition
No
Max I/o Pins
27
Ext Interrupts
4
Usb Speed
No
Usb Interface
No
Spi
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
3
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 105
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
5
Output Compare Channels
16
Input Capture Channels
1
Pwm Channels
12
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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27.2.1.1
27.2.1.2
314
AT90PWM2/3/2B/3B
Example 1
Example 2
are controlled by the Power Reduction Register. See
details.
Table 27-1.
Table 27-2.
It is possible to calculate the typical current consumption based on the numbers from
for other V
Calculate the expected current consumption in idle mode with USART, TIMER1, and SPI
enabled at V
add 18% for the USART, 26% for the SPI, and 11% for the TIMER1 module. Reading from
ure 27-5
total current consumption in idle mode with USART0, TIMER1, and SPI enabled, gives:
Same conditions as in example 1, but in active mode instead. From
we see that we need to add 3.3% for the USART, 4.8% for the SPI, and 2.0% for the TIMER1
module. Reading from
PRR bit
PRPSC2
PRPSC1
PRPSC0
PRTIM1
PRTIM0
PRSPI
PRUSART
PRADC
PRR bit
PRPSC2
PRPSC1
PRPSC0
PRTIM1
PRTIM0
PRSPI
PRUSART
PRADC
I
CC
total
≈
, we find that the idle current consumption is ~0,17mA at V
0.17mA
CC
CC
and frequency settings than listed in
Additional Current Consumption for the different I/O modules (absolute values)
Additional Current Consumption (percentage) in Active and Idle mode
= 3.0V and F = 1MHz. From
•
(
1
Additional Current consumption
compared to Active with external
clock
(see
10%
10%
10%
8.5%
4.3%
5.3%
15.6
10.5%
+
Typical numbers
350 uA
350 uA
350 uA
300 uA
200 uA
250 uA
550 uA
350 uA
0.36
Figure 27-1
Figure 27-1
+
0.22
V
CC
+
= 3V, F = 8MHz
, we find that the active current consumption is ~0,6mA at V
0.14
and
)
Figure
≈
0.29mA
Table
27-2)
Table
27-2, third column, we see that we need to
“Power Reduction Register” on page 42
27-1.
Additional Current consumption
compared to Idle with external clock
(see
25%
25%
25%
22%
11%
14%
36
25%
1.3 mA
1.3 mA
1.3 mA
1.15 mA
0.75 mA
0.9 mA
2 mA
1.3 mA
Figure 27-5
CC
V
Table
CC
= 3.0V and F = 1MHz. The
= 5V, F = 16MHz
and
27-2, second column
Figure
4317J–AVR–08/10
Table 27-2
27-6)
Fig-
for
CC
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