AT90PWM81-16MF Atmel, AT90PWM81-16MF Datasheet - Page 231
AT90PWM81-16MF
Manufacturer Part Number
AT90PWM81-16MF
Description
IC MCU AVR 8K FLASH ISP 32QFN
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet
1.AT90PWM81-16MN.pdf
(325 pages)
Specifications of AT90PWM81-16MF
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, PWM, WDT
Number Of I /o
20
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
256 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 ~ 105°C
Package / Case
32-MLF®, QFN
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer:
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19. debugWIRE On-chip Debug System
19.1
19.2
19.3
7734P–AVR–08/10
Features
Overview
Physical Interface
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The debugWIRE On-chip debug system uses a One-wire, bi-directional interface to control the program
flow, execute AVR instructions in the CPU and to program the different non-volatile memories.
When the debugWIRE Enable (DWEN) Fuse is programmed and Lock bits are unprogrammed, the
debugWIRE system within the target device is activated. The RESET port pin is configured as a wire-
AND (open-drain) bi-directional I/O pin with pull-up enabled and becomes the communication gateway
between target and emulator.
Figure 19-1.
Figure 19-1
The system clock is not affected by debugWIRE and will always be the clock source selected by the
CKSEL Fuses.
When designing a system where debugWIRE will be used, the following observations must be made for
correct operation:
Complete Program Flow Control
Emulates All On-chip Functions, Both Digital and Analog, except RESET Pin
Real-time Operation
Symbolic Debugging Support (Both at C and Assembler Source Level, or for Other HLLs)
Unlimited Number of Program Break Points (Using Software Break Points)
Non-intrusive Operation
Electrical Characteristics Identical to Real Device
Automatic Configuration System
High-Speed Operation
Programming of Non-volatile Memories
shows the schematic of a target MCU, with debugWIRE enabled, and the emulator connector.
The debugWIRE Setup
dW
GND
dW(RESET)
VCC
1.8 - 5.5V
AT90PWM81
231
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