ATTINY461-15MZ Atmel, ATTINY461-15MZ Datasheet - Page 41

• Manufacturer Part Number: ATTINY461-15MZ
• Description: MCU AVR 4K FLASH 15MHZ 32-QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY461-15MZ

• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 16
• Eeprom Size: 256 x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: USI
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.0.3
7753F–AVR–01/11
Power-on Reset
Figure 9-1.
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level
is defined in
V
well as to detect a failure in supply voltage.
A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the
Power-on Reset threshold voltage invokes the delay counter, which determines how long the
device is kept in RESET after V
when V
Figure 9-2.
CC
INTERNAL
is below the detection level. The POR circuit can be used to trigger the Start-up Reset, as
TIME-OUT
V
CC
RESET
CC
RESET
decreases below the detection level.
V
CCRR
BODLEVEL [1..0]
“System and Reset Characteristics” on page
Reset Logic
MCU Start-up, RESET Tied to V
V
Pull-up Resistor
V
V
RST
PORMAX
PORMIN
FILTER
SPIKE
CC
t
TOUT
rise. The RESET signal is activated again, without any delay,
ATtiny261/ATtiny461/ATtiny861
CKSEL[1:0]
Power-on Reset
Reset Circuit
SUT[1:0]
Watchdog
Brown-out
Oscillator
Generator
Circuit
Clock
CK
CC
Register (MCUSR)
MCU Status
DATA BUS
Delay Counters
190. The POR is activated whenever
TIMEOUT
41