ATMEGA162L-8PC Atmel, ATMEGA162L-8PC Datasheet - Page 48

• Manufacturer Part Number: ATMEGA162L-8PC
• Description: IC MCU AVR 16K 3V 8MHZ 40-DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA162L-8PC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Brown-out Detection
48
ATmega162(V/U/L)
ATmega162 has an On-chip Brown-out Detection (BOD) circuit for monitoring the V
level during operation by comparing it to a fixed trigger level. The trigger level for the
BOD can be selected by the BODLEVEL Fuses. The trigger level has a hysteresis to
ensure spike free Brown-out Detection. The hysteresis on the detection level should be
interpreted as V
Table 19. BODLEVEL Fuse Coding
Notes:
Table 20. Brown-out Hysteresis
When the BOD is enabled and V
Figure 25), the Brown-out Reset is immediately activated. When V
the trigger level (V
out period t
The BOD circuit will only detect a drop in V
for longer than t
BODLEVEL Fuses [2:0]
111
110
101
100
011
010
001
000
Symbol
V
(2)
HYST
1. V
2. BODLEVEL = 011 for ATmega162U. Otherwise reserved.
TOUT
devices where this is the case, the device is tested down to V
production test. This guarantees that a Brown-out Reset will occour before V
to a voltage where correct operation of the microcontroller is no longer guarateed.
This test is performed using BODLEVEL = 110 for ATmega162V, BODLEVEL = 101
for ATmega162L, and BODLEVEL = 100 for ATmega162.
BOT
Parameter
Brown-out Detector hysteresis
BOD
BOT+
has expired.
may be below nominal minimum operating voltage for some devices. For
BOT+
given in Table 18.
= V
in Figure 25), the delay counter starts the MCU after the Time-
BOT
+ V
HYST
Min. V
CC
decreases to a value below the trigger level (V
/2 and V
BOT
(1)
CC
BOT-
if the voltage stays below the trigger level
= V
Typ. V
BOT
Min.
1.8
2.7
4.3
2.3
BOD Disabled
Reserved
BOT
- V
HYST
Typ.
50
/2.
Max. V
CC
CC
Max.
increases above
= V
BOT
2513C–AVR–09/02
BOT
during the
Units
CC
Units
mV
BOT-
V
drops
CC
in