ATMEGA324P-A15MZ Atmel, ATMEGA324P-A15MZ Datasheet - Page 38

• Manufacturer Part Number: ATMEGA324P-A15MZ
• Description: MCU AVR 32KB FLASH 15MHZ 44-VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA324P-A15MZ

• Package / Case: 44-VQFN Exposed Pad
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 32
• Eeprom Size: 1K x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Program Memory Size: 32KB (32K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: I²C, SPI, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Power-on Reset
38
ATmega32(L)
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level
is defined in
POR circuit can be used to trigger the Start-up Reset, as 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 16. MCU Start-up, RESET Tied to V
Figure 17. MCU Start-up, RESET Extended Externally
CC
INTERNAL
INTERNAL
TIME-OUT
TIME-OUT
decreases below the detection level.
RESET
RESET
RESET
RESET
V
V
Table
CC
CC
15. The POR is activated whenever V
V
V
V
POT
POT
RST
CC
t
rise. The RESET signal is activated again, without any delay,
TOUT
CC
.
V
RST
t
TOUT
CC
is below the detection level. The
2503N–AVR–06/08