AT90PWM1 Atmel Corporation, AT90PWM1 Datasheet - Page 128

• Manufacturer Part Number: AT90PWM1
• Manufacturer: Atmel Corporation

Specifications of AT90PWM1

• Flash (kbytes): 8 Kbytes
• Pin Count: 24
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 19
• Ext Interrupts: 4
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 2
• Resistive Touch Screen: No
• 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: 4
• Output Compare Channels: 12
• Input Capture Channels: 1
• Pwm Channels: 7
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

16.5
16.5.1
128
Functional Description
AT90PWM1
Waveform Cycles
Table 37. Internal Outputs
Note:
The waveform generated by PSC can be described as a sequence of two waveforms.
The first waveform is relative to PSCOUTn0 output and part A of PSC. The part of this waveform
is sub-cycle A in the following figure.
The second waveform is relative to PSCOUTn1 output and part B of PSC. The part of this wave-
form is sub-cycle B in the following figure.
The complete waveform is ended with the end of sub-cycle B. It means at the end of waveform
B.
Figure 16-4. Cycle Presentation in 1, 2 & 4 Ramp Mode
4 Ramp Mode
2 Ramp Mode
1 Ramp Mode
SYnOut
PICRn
[11:0]
IRQPSCn
PSCnASY
StopOut
Name
1. See
2.
Ramp A0
See “Analog Synchronization” on page 152.
Figure 16-38 on page 152
Synchronization Output
PSC n Input Capture Register
Counter value at retriggering event
PSC Interrupt Request : three souces, overflow, fault, and input
capture
Stop Output (for synchronized mode)
Sub-Cycle A
ADC Synchronization (+ Amplifier Syncho. )
Ramp A
Description
Ramp A1
PSC Cycle
Ramp B0
Sub-Cycle B
Ramp B
(1)
Ramp B1
UPDATE
(2)
Signal
Register
12 bits
Signal
Signal
Type
Width
4378C–AVR–09/08