ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 328

• 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

21.11.5 TCNT2 – Timer/Counter2
21.11.6 OCR2A – Timer/Counter2 Output Compare Register A
21.11.7 OCR2B – Timer/Counter2 Output Compare Register B
328
ATmega128RFA1
the counter even if the pin is configured as an output. This feature allows software
control of the counting.
Table 21-10 CS2 Register Bits
The Timer/Counter Register gives direct access, both for read and write operations, to
the 8-bit counter unit of the Timer/Counter2. Writing to the TCNT2 Register blocks
(removes) the Compare Match on the following timer clock. Modifying the counter
(TCNT2) while the counter is running, introduces a risk of missing a Compare Match
between TCNT2 and the OCR2x Registers.
• Bit 7:0 – TCNT27:20 - Timer/Counter2 Byte
The Output Compare Register A contains an 8-bit value that is continuously compared
with the counter value (TCNT2). A match can be used to generate an Output Compare
interrupt, or to generate a waveform output on the OC2A pin.
• Bit 7:0 – OCR2A7:0 - Output Compare Register
Bit
NA ($B2)
Read/Write
Initial Value
Bit
NA ($B3)
Read/Write
Initial Value
Bit
NA ($B4)
Read/Write
Initial Value
Register Bits
CS22:20
RW
RW
RW
7
0
7
0
7
0
RW
RW
RW
6
0
6
0
6
0
RW
RW
RW
5
0
5
0
5
0
Value
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
RW
RW
RW
4
TCNT27:20
0
4
0
4
0
OCR2A7:0
OCR2B7:0
RW
RW
RW
3
0
3
0
3
0
Description
No clock source (Timer/Counter2 stopped)
clk_T2S/1 (no prescaling)
clk_T2S/8 (from prescaler)
clk_T2S/32 (from prescaler)
clk_T2S/64 (from prescaler)
clk_T2S/128 (from prescaler)
clk_T2S/256 (from prescaler)
clk_T2S/1024 (from prescaler)
RW
RW
RW
2
0
2
0
2
0
RW
RW
RW
1
0
1
0
1
0
RW
RW
RW
0
0
0
0
0
0
8266B-MCU Wireless-03/11
OCR2A
OCR2B
TCNT2