ATTINY20-XU Atmel, ATTINY20-XU Datasheet - Page 32
![MCU AVR 2KB FLASH 12MHZ 14TSSOP](/photos/39/70/397027/tssop14_sml.jpg)
ATTINY20-XU
Manufacturer Part Number
ATTINY20-XU
Description
MCU AVR 2KB FLASH 12MHZ 14TSSOP
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY20-EK1.pdf
(224 pages)
Specifications of ATTINY20-XU
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
12
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Processor Series
ATtiny
Core
AVR
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
SPI, TWI
Maximum Clock Frequency
12 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY20-XU
Manufacturer:
Atmel
Quantity:
904
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8.2.3
8.2.4
32
ATtiny20
Watchdog Reset
Brown-out Detection
Figure 8-4.
When the Watchdog times out, it will generate a short reset pulse. On the falling edge of this
pulse, the delay timer starts counting the time-out period t
ation of the Watchdog Timer and
Figure 8-5.
ATtiny20 has an On-chip Brown-out Detection (BOD) circuit for monitoring the V
operation by comparing it to a 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
and V
When the BOD is enabled, and V
8-6 on page
trigger level (V
t
The BOD circuit will only detect a drop in V
ger than t
TOUT
has expired.
BOT-
CC
CC
BOD
= V
33), the Brown-out Reset is immediately activated. When V
given in
BOT
External Reset During Operation
Watchdog Reset During Operation
BOT+
- V
in
HYST
“System and Reset Characteristics” on page
Figure
/2.
8-6), the delay counter starts the MCU after the Time-out period
CC
Table 20-4 on page 175
decreases to a value below the trigger level (V
CK
CC
if the voltage stays below the trigger level for lon-
TOUT
for details on reset time-out.
. See
175.
page 32
CC
BOT+
increases above the
for details on oper-
= V
CC
8235B–AVR–04/11
BOT
BOT-
level during
+ V
in
Figure
HYST
/2
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