ATMEGA163L-4PC Atmel, ATMEGA163L-4PC Datasheet - Page 28
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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Watchdog Reset
MCU Status Register –
MCUSR
28
ATmega163(L)
Figure 28. Brown-out Reset During Operation
The hysteresis on V
When the Watchdog times out, it will generate a short reset pulse of 1 XTAL cycle dura-
tion. On the falling edge of this pulse, the delay timer starts counting the Time-out Period
t
Figure 29. Watchdog Reset During Operation
The MCU Status Register provides information on which reset source caused an MCU
Reset.
• Bits 7..4 – Res: Reserved Bits
These bits are reserved bits in the ATmega163 and always read as zero.
• Bit 3 – WDRF: Watchdog Reset Flag
This bit is set if a Watchdog Reset occurs. The bit is reset by a Power-on Reset, or by
writing a logic zero to the Flag.
TOUT
Bit
$34 ($54)
Read/Write
Initial Value
. Refer to page 60 for details on operation of the Watchdog Timer.
INTERNAL
TIME-OUT
RESET
RESET
VCC
R
7
–
0
BOT
: V
6
–
R
0
BOT+
= V
R
5
–
0
1 CK Cycle
V
BOT
BOT-
+ 25 mV, V
R
4
–
0
WDRF
R/W
BOT-
3
= V
BORF
R/W
BOT
V
t
2
TOUT
BOT+
See Bit Description
- 25 mV
EXTRF
R/W
1
PORF
R/W
1142E–AVR–02/03
0
MCUSR
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