ATMEGA64A-ANR Atmel, ATMEGA64A-ANR Datasheet - Page 330

• Manufacturer Part Number: ATMEGA64A-ANR
• Description: IC MCU AVR 64K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64A-ANR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K 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

28.5
8160C–AVR–07/09
System and Reset Characteristics
Note:
Table 28-2.
Note:
Table 28-3.
Notes:
Symbol
V
V
V
V
t
t
V
BOD
t
I
RST
HYST
POT
RST
BOT
BG
BG
BG
1. Refer to
1. R should be in the range 3kΩ - 100kΩ, and C should be at least 20 pF. The C values given in
2. The frequency will vary with package type and board layout.
1. The Power-on Reset will not work unless the supply voltage has been below V
2. V
the table includes pin capacitance. This will vary with package type.
this is the case, the device is tested down to V
antees that a Brown-out Reset will occur before V
operation of the microcontroller is no longer guaranteed.
Parameter
Power-on Reset Threshold
Voltage (rising)
Power-on Reset Threshold
Voltage (falling)
Voltage
Minimum pulse width on
RESET Pin
Brown-out Reset Threshold
Voltage
Minimum low voltage period
for Brown-out Detection
Brown-out Detector
hysteresis
Bandgap reference voltage
Bandgap reference start-up
time
Bandgap reference current
consumption
BOT
RESET Pin Threshold
R [kΩ]
External RC Oscillator, Typical Frequencies
Reset, Brown-out and internal Voltage reference Characteristics
31.5
6.5
may be below nominal minimum operating voltage for some devices. For devices where
“External Clock” on page 42
(2)
(1)
(1)
BODLEVEL = 1
BODLEVEL = 0
BODLEVEL = 1
BODLEVEL = 0
Condition
for details.
C [pF]
20
20
CC
= V
CC
drops to a voltage where correct
BOT
0.2 V
1.15
Min
2.5
3.6
during the production test. This guar-
CC
1.23
Typ
120
1.4
1.3
2.7
4.0
40
10
2
2
ATmega64A
0.85 V
2.0 MHz
650 kHz
Max
1.35
2.3
2.3
1.5
2.9
4.2
70
f
POT
(2)
CC
(falling).
Units
mV
µA
µs
µs
µs
µs
V
V
V
V
V
330