ATXMEGA64A3-MU Atmel, ATXMEGA64A3-MU Datasheet - Page 48
ATXMEGA64A3-MU
Manufacturer Part Number
ATXMEGA64A3-MU
Description
8-bit Microcontrollers - MCU 8/16 bit 1.6V-3.6V 64KB + 4KB
Manufacturer
Atmel
Datasheet
1.ATXMEGA64A3-MU.pdf
(134 pages)
Specifications of ATXMEGA64A3-MU
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
AVR
Data Bus Width
8 bit/16 bit
Maximum Clock Frequency
32 MHz
Program Memory Size
64 KB
Data Ram Size
4 KB
On-chip Adc
Yes
Package / Case
QFN EP
Mounting Style
SMD/SMT
A/d Bit Size
12 bit
A/d Channels Available
8
Data Rom Size
2 KB
Interface Type
I2C, SPI, USART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
50
Number Of Timers
7
Processor Series
ATXMega
Program Memory Type
Flash
Factory Pack Quantity
260
Supply Voltage - Max
3.6 V
Supply Voltage - Min
1.6 V
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29. Program and Debug Interfaces
29.1
29.2
29.3
29.3.1
29.3.2
8068T–AVR–12/10
Features
Overview
IEEE 1149.1 (JTAG) Boundary-scan
Boundary-scan Order
Boundary-scan Description Language Files
•
•
•
•
•
The programming and debug facilities are accessed through the JTAG and PDI physical inter-
faces. The PDI physical interface uses one dedicated pin together with the Reset pin, and no
general purpose pins are used. JTAG uses four general purpose pins on PORTB.
The PDI is an Atmel proprietary protocol for communication between the microcontroller and
Atmel’s or third party development tools.
The JTAG physical layer handles the basic low-level serial communication over four I/O lines
named TMS, TCK, TDI, and TDO. It complies to the IEEE Std. 1149.1 for test access port and
boundary scan.
Table 30-8 on page 53
chain is selected as data path. Bit 0 is the LSB; the first bit scanned in, and the first bit scanned
out. The scan order follows the pin-out order. Bit 4, 5, 6 and 7 of Port B is not in the scan chain,
since these pins constitute the TAP pins when the JTAG is enabled.
Boundary-scan Description Language (BSDL) files describe Boundary-scan capable devices in
a standard format used by automated test-generation software. The order and function of bits in
the Boundary-scan Data Register are included in this description. BSDL files are available for
ATxmega256/192/128/64A3 devices.
See
PDI - Program and Debug Interface (Atmel proprietary 2-pin interface)
JTAG Interface (IEEE std. 1149.1 compliant)
Boundary-scan capabilities according to the IEEE Std. 1149.1 (JTAG)
Access to the OCD system
Programming of Flash, EEPROM, Fuses and Lock Bits
Table 30-8 on page 53
shows the Scan order between TDI and TDO when the Boundary-scan
for ATxmega256/192/128/64A3 Boundary Scan Order.
XMEGA A3
48
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