ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 453

• 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

30.4 Boot Loader Lock Bits
30.4.1 Entering the Boot Loader Program
30.5 Addressing the Flash During Self-Programming
8266A-MCU Wireless-12/09
Bit
RAMPZ
ZH (R31)
ZL (R30)
If no Boot Loader capability is needed, the entire Flash is available for application code.
The Boot Loader has two separate sets of Boot Lock bits which can be set
independently. This gives the user a unique flexibility to select different levels of
protection.
The user can select:
• To protect the entire Flash from a software update by the MCU.
• To protect only the Boot Loader Flash section from a software update by the MCU.
• To protect only the Application Flash section from a software update by the MCU.
• Allow software update in the entire Flash.
See
software and in Serial or Parallel Programming mode, but they can be cleared by a
Chip Erase command only. The general Write Lock (Lock Bit mode 2) does not control
the programming of the Flash memory by SPM instruction. Similarly, the general
Read/Write Lock (Lock Bit mode 1) does not control reading nor writing by
(E)LPM/SPM, if it is attempted.
Entering the Boot Loader takes place by a jump or call from the application program.
This may be initiated by a trigger such as a command received via USART, or SPI
interface. Alternatively, the Boot Reset Fuse can be programmed so that the Reset
Vector is pointing to the Boot Flash start address after a reset. In this case, the Boot
Loader is started after a reset. After the application code is loaded, the program can
start executing the application code. Note that the fuses cannot be changed by the
MCU itself. This means that once the Boot Reset Fuse is programmed, the Reset
Vector will always point to the Boot Loader Reset and the fuse can only be changed
through the serial or parallel programming interface.
Table 30-2. Boot Reset Fuse
The Z-pointer is used to address the SPM commands. The Z pointer consists of the Z-
registers ZL and ZH in the register file, and RAMPZ in the I/O space. The number of
bits actually used is implementation dependent. Note that the RAMPZ register is only
implemented when the program space is larger than 64K bytes.
Note:
BOOTRST
Z15
Table 31-2 on page 464
23
15
Z7
7
1
0
1. “1” means unprogrammed, “0” means programmed
Reset Address
Reset Vector = Application Reset (address 0x0000)
Reset Vector = Boot Loader Reset (see
Z14
22
14
Z6
6
Z13
21
13
Z5
5
(1)
for further details. The Boot Lock bits can be set in
Z12
Z4
20
12
4
Z11
Z3
19
11
3
Table 30-7 on page
ATmega128RFA1
Z10
Z2
18
10
2
RAMPZ1
461)
Z9
Z1
17
9
1
RAMPZ0
16
Z8
Z0
8
0
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