ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 440

• Manufacturer Part Number: ATMEGA128RFA1-ZU
• Description: IC AVR MCU 2.4GHZ XCEIVER 64QFN
• Manufacturer: Atmel
• Series: ATMEGAr

Specifications of ATMEGA128RFA1-ZU

• Frequency: 2.4GHz
• Data Rate - Maximum: 2Mbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: General Purpose
• Power - Output: 3.5dBm
• Sensitivity: -100dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 12.5mA
• Current - Transmitting: 14.5mA
• Data Interface: PCB, Surface Mount
• Memory Size: 128kB Flash, 4kB EEPROM, 16kB RAM
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VFQFN, Exposed Pad
• Rf Ic Case Style: QFN
• No. Of Pins: 64
• Supply Voltage Range: 1.8V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 16 KB
• Interface Type: JTAG
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 38
• Number Of Timers: 6
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVR128RFA1-EK1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

28.9 Bibliography
28.10 On-chip Debug Related Register in I/O Memory
28.10.1 OCDR – On-Chip Debug Register
440
ATmega128RFA1
The JTAG programming capability supports:
• Flash programming and verifying.
• EEPROM programming and verifying.
• Fuse programming and verifying.
• Lock bit programming and verifying.
The Lock bit security is exactly as in parallel programming mode. If the Lock bits LB1 or
LB2 are programmed, the OCDEN Fuse cannot be programmed unless first doing a
chip erase. This is a security feature that ensures no back-door exists for reading out
the content of a secured device.
The details on programming through the JTAG interface and programming specific
JTAG instructions are given in the section
page
For more information about general Boundary-scan, the following literature can be
consulted:
• IEEE: IEEE Std. 1149.1-1990. IEEE Standard Test Access Port and Boundary-scan
• Colin Maunder: The Board Designers Guide to Testable Logic Circuits, Addison-
The OCDR Register provides a communication channel from the running program in
the microcontroller to the debugger. The CPU can transfer a byte to the debugger by
writing to this location. At the same time, an internal flag; I/O Debug Register Dirty
IDRD is set to indicate to the debugger that the register has been written. When the
CPU reads the OCDR Register the 7 LSB will be from the OCDR Register, while the
MSB is the IDRD bit. The debugger clears the IDRD bit when it has read the
information. In some AVR devices, this register is shared with a standard I/O location.
In this case, the OCDR Register can only be accessed if the OCDEN Fuse is
programmed, and the debugger enables access to the OCDR Register. In all other
cases, the standard I/O location is accessed.
• Bit 7:0 – OCDR7:0 - On-Chip Debug Register Data
Table 28-16 OCDR Register Bits
Bit
$31 ($51)
Read/Write
Initial Value
Register Bits
OCDR7:0
Architecture, IEEE, 1993.
Wesley, 1992.
481.
RW
7
0
RW
6
0
RW
5
0
Value
RW
4
0
0
OCDR7:0
RW
3
0
"Programming via the JTAG Interface" on
Description
Refer to the debugger documentation for
further information on how to use this
register.
RW
2
0
RW
1
0
RW
0
0
8266A-MCU Wireless-12/09
OCDR