ATTINY40-MMHR Atmel, ATTINY40-MMHR Datasheet - Page 33
ATTINY40-MMHR
Manufacturer Part Number
ATTINY40-MMHR
Description
MCU AVR 4KB FLASH 12MHZ 3X3 QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY40-MMHR.pdf
(216 pages)
Specifications of ATTINY40-MMHR
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
18
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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8.2.2
8263A–AVR–08/10
External Reset
device is kept in reset after V
V
Figure 8-2.
Figure 8-3.
An External Reset is generated by a low level on the RESET pin if enabled. Reset pulses longer
than the minimum pulse width (see section
will generate a reset, even if the clock is not running. Shorter pulses are not guaranteed to gen-
erate a reset. When the applied signal reaches the Reset Threshold Voltage – V
positive edge, the delay counter starts the MCU after the time-out period – t
External reset is ignored during Power-on start-up count. After Power-on reset the internal reset
is extended only if RESET pin is low when the initial Power-on delay count is complete. See
ure 8-2
CC
TIME-OUT
INTERNAL
TIME-OUT
INTERNAL
decreases below the detection level.
RESET
RESET
RESET
RESET
V
V
CC
CC
and
Figure
MCU Start-up, RESET High before Initial Time-out
MCU Start-up, RESET Extended Externally
8-3.
V
V
POT
POT
CC
> t
t
TOUT
rise. The reset signal is activated again, without any delay, when
V
TOUT
RST
“System and Reset Characteristics” on page
V
RST
t
TOUT
TOUT
– has expired.
RST
– on its
168)
Fig-
33
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