ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 227
ATMEGA128RFA1-ZU
Manufacturer Part Number
ATMEGA128RFA1-ZU
Description
IC AVR MCU 2.4GHZ XCEIVER 64QFN
Manufacturer
Atmel
Series
ATMEGAr
Datasheets
1.ATMEGA128-16AU.pdf
(385 pages)
2.ATAVR128RFA1-EK1.pdf
(13 pages)
3.ATAVR128RFA1-EK1.pdf
(555 pages)
4.ATMEGA128RFA1-ZU.pdf
(524 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA128RFA1-ZU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATMEGA128RFA1-ZUR
Manufacturer:
ON
Quantity:
56 000
- ATMEGA128-16AU PDF datasheet
- ATAVR128RFA1-EK1 PDF datasheet #2
- ATAVR128RFA1-EK1 PDF datasheet #3
- ATMEGA128RFA1-ZU PDF datasheet #4
- Current page: 227 of 524
- Download datasheet (5Mb)
17.2.1 Registers
17.2.2 Definitions
17.3 Timer/Counter Clock Sources
17.4 Counter Unit
8266A-MCU Wireless-12/09
The Timer/Counter (TCNT0) and Output Compare Registers (OCR0A and OCR0B) are
8-bit registers. Interrupt request signals (abbreviated to Int.Req. in the figure) are all
visible in the Timer Interrupt Flag Register (TIFR0). All interrupts are individually
masked with the Timer Interrupt Mask Register (TIMSK0). TIFR0 and TIMSK0 are not
shown in the figure.
The Timer/Counter can be clocked internally, via the prescaler or by an external clock
source on the T0 pin. The Clock Select logic block controls which clock source and
edge the Timer/Counter uses to increment (or decrement) its value. The Timer/Counter
is inactive when no clock source is selected. The output from the Clock Select logic is
referred to as the timer clock (clk
The double buffered Output Compare Registers (OCR0A and OCR0B) are compared
with the Timer/Counter value at all times. The result of the compare can be used by the
Waveform Generator to generate a PWM or variable frequency output on the Output
Compare pins (OC0A and OC0B); see
The Compare Match event will also set the Compare Flag (OCF0A or OCF0B) which
can be used to generate an Output Compare interrupt request.
Many register and bit references in this section are written in general form. A lower case
“n” replaces the Timer/Counter number (in this case 0). A lower case “x” replaces the
Output Compare Unit (in this case Compare Unit A or Compare Unit B). However when
using the register or bit defines in a program, the precise form must be used i.e.,
TCNT0 for accessing Timer/Counter0 counter value and so on.
The definitions in Table 17-1 are also used extensively throughout the document.
Table 17-1. Definitions
The Timer/Counter can be clocked by an internal or an external clock source. The clock
source is selected by the Clock Select logic which is controlled by the Clock Select
(CS02:0) bits located in the Timer/Counter Control Register (TCCR0B). For details on
clock sources and prescaler see
The main part of the 8-bit Timer/Counter is the programmable bi-directional counter
unit. Figure 17-2 shows a block diagram of the counter and its surroundings.
BOTTOM
MAX
TOP
The counter reaches the BOTTOM when it becomes 0x00.
The counter reaches its MAXimum when it becomes 0xFF (decimal 255).
The counter reaches the TOP when it becomes equal to the highest value in
the count sequence. The TOP value can be assigned to be the fixed value
0xFF (MAX) or the value stored in the OCR0A Register. The assignment is
dependent on the mode of operation.
T0
Timer/Counter 0, 1, 3, 4, and 5 Prescaler on page 304
).
"Output Compare Unit" on page 228
ATmega128RFA1
for details.
227
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