ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 148

• 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

11 System Clock and Clock Options
11.1 Overview
11.2 Clock Systems and their Distribution
11.2.1 CPU Clock – clk
148
Counter
Symbol
Timer/Counter
(32.768kHz)
ATmega128RFA1
Oscillator
Multiplexer
Clock
Asynchronous
Timer
CPU
This section describes the clock options for the AVR microcontroller.
Figure 11-1 below
distribution. All of the clocks need not be active at a given time. In order to reduce
power consumption, the clocks to modules not being used can be halted by using
different sleep modes, as described in chapter
on page
Figure 11-1. Clock Distribution
The CPU clock is routed to parts of the system concerned with operation of the AVR
core. Examples of such modules are the General Purpose Register File, the Status
Register and the data memory holding the Stack Pointer. Halting the CPU clock inhibits
the core from performing general operations and calculations.
General I/O
Modules
clk
I/O
157. The clock systems are detailed below.
External Clock
System Clock
Control Unit
Multiplexer
AVR Clock
Prescaler
Clock
ADC
Source clock
presents the principal clock systems in the AVR and their
CPU Core
Transceiver Crystal
Reset Logic
clk
clk
Oscillator
(16MHz)
FLASH
CPU
Multiplexer
clk
clk
clk
clk
Clock
RCOSC
RAMREGF
W DT
TRX
Watchdog Timer
"Power Management and Sleep Modes"
RAM
Oscillator (16MHz)
Calibrated RC
Prescaler
1:2
1/8 Clock Prescaler
clk
CALIB
Flash and
EEPROM
8266B-MCU Wireless-03/11
W atchdog Oscillator
(128kHz)
Transceiver
Radio