ATMEGA163L-4PC Atmel, ATMEGA163L-4PC Datasheet - Page 27
ATMEGA163L-4PC
Manufacturer Part Number
ATMEGA163L-4PC
Description
IC AVR MCU 16K A/D 2.7V 40DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA163-8AC.pdf
(187 pages)
Specifications of ATMEGA163L-4PC
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
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
Data Converters
A/D 8x10b
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
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External Reset
Brown-out Detection
1142E–AVR–02/03
Figure 26. MCU Start-up, RESET Extended Externally
An External Reset is generated by a low level on the RESET pin. Reset pulses longer
than 500 ns will generate a Reset, even if the clock is not running. Shorter pulses are
not guaranteed to generate a Reset. When the applied signal reaches the Reset
Threshold Voltage – V
Time-out Period t
Figure 27. External Reset During Operation
ATmega163 has an On-chip Brown-out Detection (BOD) circuit for monitoring the V
level during the operation. The BOD circuit can be enabled/disabled by the fuse
BODEN. When the BOD is enabled (BODEN programmed), and V
value below the trigger level, the Brown-out Reset is immediately activated. When V
increases above the trigger level, the Brown-out Reset is deactivated after a delay. The
delay is defined by the user in the same way as the delay of POR signal, in Table 5. The
trigger level for the BOD can be selected by the fuse BODLEVEL to be 2.7V
(BODLEVEL unprogrammed), or 4.0V (BODLEVEL programmed). The trigger level has
a hysteresis of 50 mV to ensure spike free Brown-out Detection.
The BOD circuit will only detect a drop in V
for longer than 9 µs for trigger level 4.0V, 21 µs for trigger level 2.7V (typical values).
INTERNAL
TIME-OUT
RESET
RESET
VCC
TOUT
has expired.
RST
V
POT
on its positive edge, the delay timer starts the MCU after the
V
CC
RST
if the voltage stays below the trigger level
t
TOUT
ATmega163(L)
CC
decreases to a
27
CC
CC
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