ATMEGA32M1-AU Atmel, ATMEGA32M1-AU Datasheet - Page 136
ATMEGA32M1-AU
Manufacturer Part Number
ATMEGA32M1-AU
Description
MPU AVR 32K FLASH 20MHZ 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32M1-AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
CAN, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of I /o
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA32M1-AU
Manufacturer:
TYCO
Quantity:
210
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17.5.3
17.5.3.1
136
ATmega16M1/32M1/64M1
Operation Mode Descriptions
One Ramp Mode (Edge-Aligned)
Figure 17-3. Cycle Presentation in Centered Mode
Figure 17-2 on page 135
ter. Centered Mode is like One Ramp Mode which counts down and then up.
Notice that the update of the waveform generator registers is done regardless of ramp Mode at
the end of the PSC cycle.
Waveforms and duration of output signals are determined by parameters held in the registers
(POCRnSA, POCRnRA, POCRnSB, POCR_RB) and by the running mode. Two modes are
possible:
The following figure shows the resultant outputs PSCOUTnA and PSCOUTnB operating in one
ramp mode over a PSC cycle.
PSC Counter Value
• One Ramp Mode. In this mode, all the 3 PSCOUTnB outputs are edge-aligned and the 3
• Center Aligned Mode. In this mode, all the 6 PSC outputs are aligned at the center of the
PSCOUTnA can be also edge-aligned when setting the same values in the dedicated
registers.
In this mode, the PWM frequency is twice the Center Aligned Mode PWM frequency
period. Except when using the same duty cycles on the 3 modules, the edges of the outputs
are not aligned. So the PSC outputs do not commute at the same time, thus the system
which is driven by these outputs will generate less commutation noise.
In this mode, the PWM frequency is twice slower than in One Ramp Mode
and
Figure 17-3
graphically illustrate the values held in the PSC coun-
One PSC Cycle
8209D–AVR–11/10
UPDATE
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