AT90PWM3B Atmel Corporation, AT90PWM3B Datasheet - Page 164
AT90PWM3B
Manufacturer Part Number
AT90PWM3B
Description
Manufacturer
Atmel Corporation
Specifications of AT90PWM3B
Flash (kbytes)
8 Kbytes
Pin Count
32
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
8
Hardware Qtouch Acquisition
No
Max I/o Pins
27
Ext Interrupts
4
Usb Speed
No
Usb Interface
No
Spi
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
3
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 105
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
5
Output Compare Channels
16
Input Capture Channels
1
Pwm Channels
12
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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16.25.11 PSC 0 Control Register – PCTL0
164
AT90PWM2/3/2B/3B
update of the PSC internal registers will be done at the end of the PSC cycle if the Output Com-
pare Register RB has been the last written.
When set, this bit prevails over LOCK (bit 5)
• Bit 5 – PLOCKn: PSC n Lock
When this bit is set, the Output Compare Registers RA, RB, SA, SB, the Output Matrix POM2
and the PSC Output Configuration PSOCn can be written without disturbing the PSC cycles.
The update of the PSC internal registers will be done if the LOCK bit is released to zero.
• Bit 4:3 – PMODEn1: 0: PSC n Mode
Select the mode of PSC.
Table 16-13. PSC n Mode Selection
• Bit 2 – POPn: PSC n Output Polarity
If this bit is cleared, the PSC outputs are active Low.
If this bit is set, the PSC outputs are active High.
• Bit 1 – PCLKSELn: PSC n 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 – POME2: PSC 2 Output Matrix Enable (PSC2 only)
Set this bit to enable the Output Matrix feature on PSC2 outputs. See
157.
When Output Matrix is used, the PSC n Output Polarity POPn has no action on the outputs.
Bit
Read/Write
Initial Value
PMODEn1
0
0
1
1
PPRE01
R/W
PMODEn0
0
1
0
1
7
0
PPRE00
R/W
6
0
Description
One Ramp Mode
Two Ramp Mode
Four Ramp Mode
Center Aligned Mode
PBFM0
R/W
5
0
PAOC0B
R/W
4
0
PAOC0A
R/W
3
0
PARUN0
R/W
2
0
PCCYC0
R/W
“PSC2 Outputs” on page
1
0
PRUN0
R/W
0
0
4317J–AVR–08/10
PCTL0
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