ATMEGA128A-ANR Atmel, ATMEGA128A-ANR Datasheet - Page 323

• Manufacturer Part Number: ATMEGA128A-ANR
• Description: IC MCU AVR 128K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA128A-ANR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K 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: 64-TQFP
• Core: AVR8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

27.5
8151H–AVR–02/11
System and Reset Characteristics
Table 27-2.
Notes:
Table 27-3.
Notes:
Symbol
V
V
V
V
t
t
BOD
RST
HYST
POT
BOT
RST
1. R should be in the range 3 kΩ - 100 kΩ, and C should be at least 20pF. 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. The test is performed using
BODLEVEL=0 and BODLEVEL=1.
Parameter
Power-on Reset Threshold
Voltage (rising)
Power-on Reset Threshold
Voltage (falling)
Voltage
Pulse width on RESET Pin
Brown-out Reset Threshold
Voltage
Minimum low voltage
period for Brown-out
Detection
Brown-out Detector
hysteresis
BOT
RESET Pin Threshold
R [kΩ]
External RC Oscillator, Typical Frequencies
Reset Characteristics
may be below nominal minimum operating voltage for some devices. For devices where
33
10
(2)
(1)
(1)
BODLEVEL = 0
BODLEVEL = 0
Condition
C [pF]
22
22
CC
= V
CC
drops to a voltage where correct
BOT
0.2 V
Min
1.5
3.7
during the production test. This guar-
CC
Typ
100
ATmega128A
1.4
1.3
4.0
2
0.85 V
650kHz
2.0MHz
Max
2.3
2.3
4.5
f
POT
(2)
CC
(falling)
Units
mV
µs
µs
V
V
V
V
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