AT90PWM81-16SN Atmel, AT90PWM81-16SN Datasheet - Page 174

• Manufacturer Part Number: AT90PWM81-16SN
• Description: IC MCU AVR 8K FLASH ISP 20SOIC
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM81-16SN

• 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)
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI
• Maximum Clock Frequency: 16 MHz
• Number Of Timers: 1
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• On-chip Dac: 10 bit, 1 Channel
• Height: 2.35 mm
• Length: 13 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Width: 7.6 mm
• For Use With: ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

13.23.7
174
AT90PWM81
PSCR Control Register – PCTL0
Table 13-11.
• Bit 2 – POP0: PSCR Output Polarity
If this bit is cleared, the PSCR outputs are active Low.
If this bit is set, the PSCR outputs are active High.
• Bit 1 – PCLKSEL0: PSCR Input Clock Select
This bit is used to select between CLKPF or CLKPS clocks.
Set this bit to select the fast clock input (CLKPF).
Clear this bit to select the slow clock input (CLKPS).
• Bit 0 – Reserved
• Bit 7:6 – PPRE01:0 : PSCR Prescaler Select
This two bits select the PSCR input clock division factor. All generated waveform will be modified by this
factor.
Table 13-12.
Bit
Read/Write
Initial Value
PMODE01
0
0
1
1
PPRE01
0
0
1
1
7
PPRE01
R/W
0
PSCR Mode Selection
PSCR Prescaler Selection
PPRE00
0
1
0
1
PMODE00
0
1
0
1
6
PPRE00
R/W
0
Description
No divider on PSCR input clock
Divide the PSCR input clock by 4
Divide the PSCR input clock by 32
Divide the PSCR clock by 256
5
PBFM01
R/W
0
One Ramp Mode
Two Ramp Mode
Four Ramp Mode
Reserved
Description
4
PAOC0B
R/W
0
3
PAOC0A
0
R/W
2
PBFM00
R/W
0
1
PCCYC0
R/W
0
0
PRUN0
R/W
0
7734P–AVR–08/10
PCTL0