ATMEGA3250P-20AUR Atmel, ATMEGA3250P-20AUR Datasheet - Page 308

• Manufacturer Part Number: ATMEGA3250P-20AUR
• Description: MCU AVR 32K FLASH 20MHZ 100TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA3250P-20AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 69
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

26.5
Table 26-3.
26.6
26.7
8023F–AVR–07/09
Symbol
V
t
V
t
V
t
I
RST
BOD
BG
BG
RST
HYST
BG
System and Reset Characterizations
Standard Power-on Reset
Enhanced Power-on Reset
Reset, Brown-out, and Internal Voltage Reference Characteristics
Parameter
Minimum pulse width on RESET Pin
Brown-out Detector Hysteresis
Min Pulse Width on Brown-out Reset
Bandgap reference voltage
Bandgap reference start-up time
Bandgap reference current consumption
RESET Pin Threshold Voltage
This implementation of power-on reset existed in early versions of ATmega325P/3250P. The
table below describes the characteristics of this power-on reset and it is valid for the following
devices, only:
• ATmega325P revision B and older
• ATmega3250P revision B and older
Table 26-4.
Note:
This implementation of power-on reset exists in newer versions of ATmega325P/3250P. The
table below describes the characteristics of this power-on reset and it is valid for the following
devices only:
• ATmega325P revision C and newer
• ATmega3250P revision C and newer
Symbol
V
SR
POT
ON
1. The Power-on Reset will not work unless the supply voltage has been below V
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
Power-on Slope Rate
Reset, Brown-out, and Internal Voltage Reference Characteristics,
T
A
= -40°C to 85°C
Condition
V
V
V
T
V
T
V
T
A
A
A
CC
CC
CC
CC
CC
= 25°C
= 25°C
= 25°C
= 3V
= 3V
= 2.7V,
= 2.7V,
= 2.7V,
0.2 V
(1)
Min
1.0
CC
ATmega325P/3250P
Typ
800
1.1
50
40
15
0.05
0.01
2
Min
0.7
Typ
1.0
0.9
0.85 V
Max
1.2
70
CC
Max
1.4
1.3
4.5
POT
(falling)
Units
Units
V/ms
mV
µA
µs
µs
ns
V
V
V
V
308