ATMEGA32M1-MU Atmel, ATMEGA32M1-MU Datasheet - Page 142

• Manufacturer Part Number: ATMEGA32M1-MU
• Description: MPU AVR 32K FLASH 20MHZ 32-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32M1-MU

• 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-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -

17.9
17.9.1
17.9.1.1
142
PSC Input
ATmega16M1/32M1/64M1
PSC Input Configuration
Filter Enable
For detailed information on the PSC, please refer to Application Note ‘AVR138: PSC Cookbook’,
available on the Atmel web site.
Each module 0, 1 and 2 of PSC has its own system to take into account one PSC input. Accord-
ing to PSC Module n Input Control Register.
Register” on page 150.
Each block A or B is also configured by this PSC Module n Input Control Register (PMICn).
Figure 17-10. PSC Input Module
The PSC Input Configuration is done by programming bits in configuration registers.
If the “Filter Enable” bit is set, a digital filter of 4 cycles is inserted before evaluation of the signal.
The disable of this function is mainly needed for prescaled PSC clock sources, where the noise
cancellation gives too high latency.
Important: If the digital filter is active, the level sensitivity is true also with a disturbed PSC clock
to deactivate the outputs (emergency protection of external component). Likewise when used as
fault input, PSC Module n Input A or Input B have to go through PSC to act on PSCOUTn0/1/2
outputs. This way needs that CLK
trol bit (PAOCnA/B), PSCINn input can desactivate directly the PSC outputs. Notice that in this
case, input is still taken into account as usually by Input Module System as soon as CLK
running.
PSCINn
Analog
Comparator
n Output
PISELnA
(PISELnB)
0
1
PELEVnA /
(PELEVnB)
PSCINn input can act has a Retrigger or Fault input.
PRFMnA3:0
(PRFMnB3:0)
PCAEnA
(PCAEnB)
Digital
Filter
CLK
PSC
PSC
PAOCnA
(PAOCnB)
is running. So thanks to PSC Asynchronous Output Con-
PFLTEnA
(PFLTEnB)
0
1
CLK
CLK
2
4
PSC
PSC
See “PMICn – PSC Module n Input Control
Input
Processing
(retriggering ...)
MPSC Core
(Counter,
Waveform
Generator, ...)
Control
of the
6 outputs
8209D–AVR–11/10
PSCOUTnA
PSCOUTnB
PSC
is