ATTINY261A-MN Atmel, ATTINY261A-MN Datasheet - Page 41
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ATTINY261A-MN
Manufacturer Part Number
ATTINY261A-MN
Description
IC MCU AVR 2K FLASH 32QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY261A-MN
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
16
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
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Processor Series
ATtiny
Core
AVR
Data Bus Width
8 bit
Data Ram Size
128 B, 256 B, 512 B
Interface Type
SPI, USI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
16
Number Of Timers
2
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 105 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY261A-MN
Manufacturer:
Atmel
Quantity:
771
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8.2.2
8.2.3
8197B–AVR–01/10
External Reset
Brown-out Detection
An External Reset is generated by a low level on the RESET pin if enabled. Reset pulses longer
than the minimum pulse width (see
ate a reset, even if the clock is not running. Shorter pulses are not guaranteed to generate a
reset. When the applied signal reaches the Reset Threshold Voltage – V
edge, the delay counter starts the MCU after the Time-out period – t
Figure 8-4.
A Brown-out Detection (BOD) circuit monitors the V
fixed trigger level. The trigger level for the BOD can be selected by the BODLEVEL Fuses. The
trigger level has a hysteresis to ensure spike free Brown-out Detection. The hysteresis on the
detection level should be interpreted as V
When the BOD is enabled, and V
8-5), the Brown-out Reset is immediately activated. When V
(V
expired.
The BOD circuit will only detect a drop in V
ger than t
Figure 8-5.
BOT+
in
BOD
Figure
CC
given in
External Reset During Operation
Brown-out Reset During Operation
INTERNAL
TIME-OUT
8-5), the delay counter starts the MCU after the Time-out period t
RESET
RESET
V
CC
“System and Reset Characteristics” on page
CC
“System and Reset Characteristics” on page
decreases to a value below the trigger level (V
V
BOT-
BOT+
CC
= V
if the voltage stays below the trigger level for lon-
BOT
CC
+ V
level during operation by comparing it to a
HYST
CC
/2 and V
V
t
TOUT
BOT+
increases above the trigger level
187.
TOUT
BOT-
– has expired.
= V
RST
BOT
– on its positive
187) will gener-
- V
BOT-
HYST
TOUT
in
/2.
Figure
has
41
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