AT90PWM1-16MU Atmel, AT90PWM1-16MU Datasheet - Page 160
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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16.25.11 PSC 1 Control Register – PCTL1
16.25.12 PSC 2 Control Register – PCTL2
160
AT90PWM1
• Bit 2 – PARUN1 : PSC 1 Autorun
When this bit is set, the PSC 1 starts with PSC0. That means that PSC 1 starts :
•
•
Thanks to this bit, 2 or 3 PSCs can be synchronized (motor control for example.
• Bit 7:6 – PPRE21:0 : PSC 2 Prescaler Select
This two bits select the PSC input clock division factor.All generated waveform will be modified
by this factor.
Table 48. PSC 2 Prescaler Selection
• Bit 5 – PBFM2 : Balance Flank Width Modulation
When this bit is clear, Flank Width Modulation operates on On-Time 1 only.
When this bit is set, Flank Width Modulation operates on On-Time 0 and On-Time 1.
• Bit 4 – PAOC2B : PSC 2 Asynchronous Output Control B
When this bit is set, Fault input selected to block B can act directly to PSCOUT21 and
PSCOUT23 outputs. See Section “PSC Clock Sources”, page 153.
• Bit 3 – PAOC2A : PSC 2 Asynchronous Output Control A
When this bit is set, Fault input selected to block A can act directly to PSCOUT20 and
PSCOUT22 outputs. See Section “PSC Clock Sources”, page 153.
• Bit 2 – PARUN2 : PSC 2 Autorun
When this bit is set, the PSC 2 starts with PSC1. That means that PSC 2 starts :
•
•
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
PPRE21
0
0
1
1
when PRUN0 bit in PCTL0 register is set,
or when PARUN0 bit in PCTL0 is set and PRUN2 bit in PCTL2 register is set.
when PRUN1 bit in PCTL1 register is set,
or when PARUN1 bit in PCTL1 is set and PRUN0 bit in PCTL0 register is set.
PPRE20
0
1
0
1
PPRE21
R/W
7
0
PPRE20
R/W
6
0
Description
No divider on PSC input clock
Divide the PSC input clock by 4
Divide the PSC input clock by 16
Divide the PSC clock by 64
PBFM2
R/W
5
0
PAOC2B
R/W
4
0
PAOC2A
R/W
3
0
PARUN1
PARUN2
R/W
R/W
2
0
2
0
PCCYC2
R/W
1
0
PRUN2
R/W
0
0
4378C–AVR–09/08
PCTL2
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