AT90PWM81-16SF Atmel, AT90PWM81-16SF Datasheet - Page 55
AT90PWM81-16SF
Manufacturer Part Number
AT90PWM81-16SF
Description
IC MCU AVR 8K FLASH ISP 20SOIC
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM81-16MN.pdf
(325 pages)
Specifications of AT90PWM81-16SF
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, PWM, WDT
Number Of I /o
16
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
20-SOIC (7.5mm Width)
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT90PWM81-16SF
Manufacturer:
Atmel
Quantity:
2 428
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7.3.2
7.4
7734P–AVR–08/10
Watchdog Timer
Voltage Reference Characteristics
DAC is used. To reduce power consumption in Power-down mode, the user can avoid the four conditions
above to ensure that the reference is turned off before entering Power-down mode.
Table 7-4.
Note:
AT90PWM81 has an Enhanced Watchdog Timer (WDT). The main features are:
•
•
•
•
Figure 7-7.
The Watchdog Timer (WDT) is a timer counting cycles of a separate on-chip 128 kHz oscillator. The
WDT gives an interrupt or a system reset when the counter reaches a given time-out value. In normal
operation mode, it is required that the system uses the WDR - Watchdog Timer Reset - instruction to
restart the counter before the time-out value is reached. If the system doesn't restart the counter, an inter-
rupt or system reset will be issued.
Clocked from separate On-chip Oscillator
3 Operating modes
Selectable Time-out period from 1ms to 8s
Possible Hardware fuse Watchdog always on (WDTON) for fail-safe mode
Symbol
V
I
– Interrupt
– System Reset
– Interrupt and System Reset
t
BG
BG
BG
1. Values are guidelines only.
Parameter
Bandgap reference voltage
Bandgap reference start-up time
Bandgap reference current
consumption
Internal Voltage Reference Characteristics
Watchdog Timer
OSCILLATOR
128 KHz
WDP3
WDIF
WDIE
Condition
(1)
Min.
INTERRUPT
MCU RESET
Typ.
AT90PWM81
1.1
40
15
Max.
Units
µA
µs
V
55
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