AT90PWM1-16MU Atmel, AT90PWM1-16MU Datasheet - Page 46
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AT90PWM1-16MU
Manufacturer Part Number
AT90PWM1-16MU
Description
IC AVR PWM 8KB FLASH 16MHZ 32QFN
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM1-16SU.pdf
(297 pages)
Specifications of AT90PWM1-16MU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
19
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
32-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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9.0.6
9.0.7
46
AT90PWM1
Watchdog Reset
MCU Status Register – MCUSR
Figure 9-5.
When the Watchdog times out, it will generate a short reset pulse of one CK cycle duration. On
the falling edge of this pulse, the delay timer starts counting the Time-out period t
page 48
Figure 9-6.
The MCU Status Register provides information on which reset source caused an MCU reset.
• 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.
• Bit 2 – BORF: Brown-out Reset Flag
This bit is set if a Brown-out Reset occurs. The bit is reset by a Power-on Reset, or by writing a
logic zero to the flag.
• Bit 1 – EXTRF: External Reset Flag
Bit
Read/Write
Initial Value
for details on operation of the Watchdog Timer.
Brown-out Reset During Operation
Watchdog Reset During Operation
CC
INTERNAL
TIME-OUT
R
7
–
0
RESET
RESET
V
CC
R
6
–
0
R
5
–
0
V
CK
BOT-
R
4
–
0
WDRF
R/W
3
BORF
R/W
2
See Bit Description
V
t
TOUT
BOT+
EXTRF
R/W
1
PORF
R/W
0
4378C–AVR–09/08
TOUT
. Refer to
MCUSR
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