AT90PWM216-16SE ATMEL [ATMEL Corporation], AT90PWM216-16SE Datasheet - Page 141
AT90PWM216-16SE
Manufacturer Part Number
AT90PWM216-16SE
Description
8-bit Microcontroller with 16K Bytes In-System Programmable flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT90PWM216-16SE.pdf
(360 pages)
- Current page: 141 of 360
- Download datasheet (6Mb)
16.5.3
16.6
16.6.1
16.7
7710D–AVR–08/09
Update of Values
Enhanced Resolution
Fifty Percent Waveform Configuration
Value Update Synchronization
When PSCOUTn0 and PSCOUTn1 have the same characteristics, it’s possible to configure the
PSC in a Fifty Percent mode. When the PSC is in this configuration, it duplicates the OCRn-
SBH/L and OCRnRBH/L registers in OCRnSAH/L and OCRnRAH/L registers. So it is not
necessary to program OCRnSAH/L and OCRnRAH/L registers.
To avoid unasynchronous and incoherent values in a cycle, if an update of one of several values
is necessary, all values are updated at the same time at the end of the cycle by the PSC. The
new set of values is calculated by sofware and the update is initiated by software.
Figure 16-11. Update at the end of complete PSC cycle.
The software can stop the cycle before the end to update the values and restart a new PSC
cycle.
New timing values or PSC output configuration can be written during the PSC cycle. Thanks to
LOCK and AUTOLOCK configuration bits, the new whole set of values can be taken into
account after the end of the PSC cycle.
When AUTOLOCK configuration is selected, the update of the PSC internal registers will be
done at the end of the PSC cycle if the Output Compare Register RB has been the last written.
The AUTOLOCK configuration bit is taken into account at the end of the first PSC cycle.
When LOCK configuration bit is set, there is no update. The update of the PSC internal registers
will be done at the end of the PSC cycle if the LOCK bit is released to zero.
The registers which update is synchronized thanks to LOCK and AUTOLOCK are PSOCn,
POM2, OCRnSAH/L, OCRnRAH/L, OCRnSBH/L and OCRnRBH/L.
See these register’s description starting on
When set, AUTOLOCK configuration bit prevails over LOCK configuration bit.
See “PSC 0 Configuration Register – PCNF0” on page 165.
Lamp Ballast applications need an enhanced resolution down to 50Hz. The method to improve
the normal resolution is based on Flank Width Modulation (also called Fractional Divider).
Cycles are grouped into frames of 16 cycles. Cycles are modulated by a sequence given by the
Software
PSC
Regulation Loop
Calculation
Cycle
With Set i
Cycle
With Set i
Cycle
With Set i
Writting in
PSC Registers
Cycle
With Set i
page
End of Cycle
Request for
an Update
164.
Cycle
With Set j
AT90PWM216/316
141
Related parts for AT90PWM216-16SE
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
At90pwm2 8-bit Avr Microcontroller With 8k Bytes In-system Programmable Flash
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Atmel CryptoMemory
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
Atmel CryptoMemory
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
Atmel CryptoMemory, 16Kbit
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
8-bit Atmel Microcontrollers
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
8-bit Atmel Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
8-bit Atmel Microcontroller with 16/32/64/128K Bytes In-System Programmable Flash
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet: