AT91SAM7S512-MU-999 Atmel, AT91SAM7S512-MU-999 Datasheet - Page 477
![IC MCU ARM7 512KB FLASH 64-VQFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
AT91SAM7S512-MU-999
Manufacturer Part Number
AT91SAM7S512-MU-999
Description
IC MCU ARM7 512KB FLASH 64-VQFN
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7S512-MU-999
Core Processor
ARM7
Core Size
16/32-Bit
Speed
55MHz
Connectivity
I²C, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
For Use With
AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7S-EK - KIT EVAL FOR ARM AT91SAM7S
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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34. Pulse Width Modulation Controller (PWM)
34.1
34.2
6175K–ATARM–30-Aug-10
overview
Block Diagram
The PWM macrocell controls several channels independently. Each channel controls one
square output waveform. Characteristics of the output waveform such as period, duty-cycle and
polarity are configurable through the user interface. Each channel selects and uses one of the
clocks provided by the clock generator. The clock generator provides several clocks resulting
from the division of the PWM macrocell master clock.
All PWM macrocell accesses are made through APB mapped registers.
Channels can be synchronized, to generate non overlapped waveforms. All channels integrate a
double buffering system in order to prevent an unexpected output waveform while modifying the
period or the duty-cycle.
Figure 34-1. Pulse Width Modulation Controller Block Diagram
PMC
MCK
Clock Generator
AT91SAM7S Series Preliminary
Channel
Channel
Selector
Selector
PWMx
PWM0
Clock
Clock
APB Interface
Controller
PWM
Duty Cycle
Duty Cycle
Counter
Counter
Update
Update
APB
Period
Period
Comparator
Comparator
Interrupt Generator
PIO
AIC
PWM0
PWM0
PWMx
PWMx
477
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