AT90PWM81-16SF Atmel, AT90PWM81-16SF Datasheet - Page 50
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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7.1.3
50
AT90PWM81
Power-on Reset
Figure 7-1.
Table 7-1.
Notes:
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level is defined
in
used to trigger the start-up Reset, as well as to detect a failure in supply voltage.
A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the Power-on
Reset threshold voltage invokes the delay counter, which determines how long the device is kept in
RESET after V
below the detection level.
Symbol
Table
V
V
t
RST
POT
RST
BODLEVEL [2..0]
1. Values are guidelines only..
2. The Power-on Reset will not work unless the supply voltage has been below V
7-1. The POR is activated whenever V
Parameter
Power-on Reset Threshold Voltage
(rising)
Power-on Reset Threshold Voltage
(falling)
Minimum pulse width on RESET
Pin
RESET Pin Threshold Voltage
CC
Reset Logic
Reset Characteristics
rise. The RESET signal is activated again, without any delay, when V
(2)
Pull-up Resistor
Spike
Filter
RSTDIS
(1)
CKSEL[3:0]
Power-on Reset
Reset Circuit
SUT[1:0]
Brown-out
Watchdog
Oscillator
Generator
Circuit
Clock
CC
is below the detection level. The POR circuit can be
Condition
CK
Register (MCUSR)
MCU Status
DATA BUS
Delay Counters
0.2Vcc
Min.
Typ.
400
1.4
1.3
TIMEOUT
POT
(falling)
0.85Vcc
7734P–AVR–08/10
Max.
2.3
2.3
CC
decreases
Units
ns
V
V
V
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