ATTINY461V-10PU Atmel, ATTINY461V-10PU Datasheet - Page 41
ATTINY461V-10PU
Manufacturer Part Number
ATTINY461V-10PU
Description
Microcontrollers (MCU) 4kB Flash 0.256kB EEPROM 16 I/O Pins
Manufacturer
Atmel
Specifications of ATTINY461V-10PU
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
2-Wire/SPI/USI
Maximum Clock Frequency
10 MHz
Number Of Programmable I/os
16
Number Of Timers
2
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
On-chip Adc
11-ch x 10-bit
Program Memory Type
Flash
Program Memory Size
4 KB
Package / Case
PDIP-20
Package
20PDIP
Device Core
AVR
Family Name
ATtiny
Maximum Speed
10 MHz
Ram Size
256 Byte
Operating Temperature
-40 to 85 °C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
Quantity
Price
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8. System Control and Reset
8.0.1
2588E–AVR–08/10
Resetting the AVR
During reset, all I/O Registers are set to their initial values, and the program starts execution
from the Reset Vector. The instruction placed at the Reset Vector must be a RJMP – Relative
Jump – instruction to the reset handling routine. If the program never enables an interrupt
source, the Interrupt Vectors are not used, and regular program code can be placed at these
locations. The circuit diagram in
reset circuitry are given in
Figure 8-1.
The I/O ports of the AVR are immediately reset to their initial state when a reset source goes
active. This does not require any clock source to be running.
After all reset sources have gone inactive, a delay counter is invoked, stretching the internal
reset. This allows the power to reach a stable level before normal operation starts. The time-out
period of the delay counter is defined by the user through the SUT and CKSEL Fuses. The dif-
ferent selections for the delay period are presented in
BODLEVEL [1..0]
Reset Logic
Pull-up Resistor
FILTER
SPIKE
Table 19-4 on page
CKSEL[1:0]
Power-on Reset
Figure 8-1
Reset Circuit
SUT[1:0]
Brown-out
Watchdog
Oscillator
Generator
Circuit
Clock
shows the reset logic. Electrical parameters of the
CK
190.
Register (MCUSR)
MCU Status
DATA BUS
“Clock Sources” on page
Delay Counters
TIMEOUT
25.
41
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