ATTINY2313A-SUR Atmel, ATTINY2313A-SUR Datasheet - Page 203

• Manufacturer Part Number: ATTINY2313A-SUR
• Description: MCU AVR 2KB FLASH 20MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY2313A-SUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

22. Typical Characteristics
22.1
8246A–AVR–11/09
Effect of Power Reduction
The data contained in this section is largely based on simulations and characterization of similar
devices in the same process and design methods. Thus, the data should be treated as indica-
tions of how the part will behave.
The following charts show typical behavior. These figures are not tested during manufacturing.
During characterisation devices are operated at frequencies higher than test limits but they are
not guaranteed to function properly at frequencies higher than the ordering code indicates.
All current consumption measurements are performed with all I/O pins configured as inputs and
with internal pull-ups enabled. Current consumption is a function of several factors such as oper-
ating voltage, operating frequency, loading of I/O pins, switching rate of I/O pins, code executed
and ambient temperature. The dominating factors are operating voltage and frequency.
A sine wave generator with rail-to-rail output is used as clock source but current consumption in
Power-Down mode is independent of clock selection. The difference between current consump-
tion in Power-Down mode with Watchdog Timer enabled and Power-Down mode with Watchdog
Timer disabled represents the differential current drawn by the Watchdog Timer.
The current drawn from pins with a capacitive load may be estimated (for one pin) as follows:
where V
I/O pin.
Peripheral modules are enabled and disabled via control bits in the Power Reduction Register.
See
Table 22-1.
I
CP
PRR bit
PRTIM0
PRTIM1
PRUSI
PRUSART
≈
“Power Reduction Register” on page 34
V
CC
CC
×
C
= operating voltage, C
L
×
Additional Current Consumption (Absolute) for Peripherals of ATtiny2313A/4313
f
SW
V
CC
= 2V, f = 1MHz
2 µA
5 µA
2 µA
4 µA
L
= load capacitance and f
for details.
V
Typical numbers
CC
= 3V, f = 4MHz
30 µA
22 µA
11 µA
11 µA
SW
= average switching frequency of
V
CC
= 5V, f = 8MHz
120 µA
50 µA
50 µA
95 µA
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