AT90PWM316-16SUR Atmel, AT90PWM316-16SUR Datasheet - Page 49
![MCU AVR 16K FLASH 16MHZ 32-SOIC](/photos/7/29/72992/313-32-soic_sml.jpg)
AT90PWM316-16SUR
Manufacturer Part Number
AT90PWM316-16SUR
Description
MCU AVR 16K FLASH 16MHZ 32-SOIC
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM216-16SU.pdf
(359 pages)
Specifications of AT90PWM316-16SUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
27
Program Memory Size
16KB (16K x 8)
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 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
32-SOIC (7.5mm Width)
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOICATAVRMC200 - KIT EVAL FOR AT90PWM3 ASYNCATAVRFBKIT - KIT DEMO BALLAST FOR AT90PWM2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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9.8
9.8.1
9.8.2
7710E–AVR–08/10
Internal Voltage Reference
Voltage Reference Enable Signals and Start-up Time
Voltage Reference Characteristics
• Bit 1 – EXTRF: External Reset Flag
This bit is set if an External Reset occurs. The bit is reset by a Power-on Reset, or by writing a
logic zero to the flag.
• Bit 0 – PORF: Power-on Reset Flag
This bit is set if a Power-on Reset occurs. The bit is reset only by writing a logic zero to the flag.
To make use of the Reset flags to identify a reset condition, the user should read and then reset
the MCUSR as early as possible in the program. If the register is cleared before another reset
occurs, the source of the reset can be found by examining the reset flags.
AT90PWM216/316 features an internal bandgap reference. This reference is used for Brown-
out Detection. The V
from the internal bandgap reference. In order to use the internal Vref, it is necessary to configure
it thanks to the REFS1 and REFS0 bits in the ADMUX register and to set an analog feature
which requires it.
The voltage reference has a start-up time that may influence the way it should be used. The
start-up time is given in
reference is on during the following situations:
Thus, when the BOD is not enabled, after enabling the ADC or the DAC, the user must always
allow the reference to start up before the output from the Analog Comparator or ADC or DAC is
used. To reduce power consumption in Power-down mode, the user can avoid the three condi-
tions above to ensure that the reference is turned off before entering Power-down mode.
Table 9-4.
Note:
1. When the BOD is enabled (by programming the BODLEVEL [2..0] Fuse).
2. When the ADC is enabled.
3. When the DAC is enabled.
Symbol
V
t
I
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
REF
2.56V reference to the ADC, DAC or Analog Comparators is generated
Table
9-4. To save power, the reference is not always turned on. The
Condition
(1)
AT90PWM216/316
Min.
Typ.
1.1
40
15
Max.
Units
µA
µs
V
49
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