ATMEGA329P-20AN Atmel, ATMEGA329P-20AN Datasheet - Page 336

• Manufacturer Part Number: ATMEGA329P-20AN
• Description: IC MCU AVR 32K 20MHZ 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA329P-20AN

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 54
• 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: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

28.5
28.6
8021G–AVR–03/11
System and Reset Characteristics
Standard Power-on Reset
Table 28-6.
Note:
T h i s
ATmega329P/ATmega3290P. The table below describes the characteristics of this power-on
reset and it is valid for the following devices, only:
• ATmega329P revision B and older
• ATmega3290P revision B and older
Table 28-7.
Note:
Symbol
V
SR
Symbol
POT
V
V
t
t
V
t
I
RST
HYST
BOD
ON
RST
BG
BG
BG
i m p l e m e n t a t i o n
1. The Power-on Reset will not work unless the supply voltage has been below V
1. The Power-on Reset will not work unless the supply voltage has been below V
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
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
Power-on Slope Rate
Reset, Brown-out, and Internal Voltage Characteristics
Reset, Brown-out, and Internal Voltage Reference Characteristics,
T
A
= -40°C to 85°C
o f
p o w e r - o n
V
V
V
Condition
T
T
T
V
V
CC
CC
CC
r e s e t
A
A
A
CC
CC
= 25°C
= 25°C
= 25°C
= 2.7V,
= 2.7V,
= 2.7V,
= 3V
= 3V
(1)
e x i s t e d
ATmega329P/3290P
0.2 V
Min
1.0
CC
Min.
0.05
0.01
0.7
i n
Typ
1.1
50
40
15
2
e a r l y
Typ
1.0
0.9
0.9 V
Max
2.5
1.2
70
Max
v e r s i o n s
1.4
1.3
4.5
POT
POT
CC
(falling)
(falling)
Units
V/ms
Units
mV
V
V
µA
µs
µs
µs
V
V
336
o f