ATMEGA128RFA1-ZU Atmel, ATMEGA128RFA1-ZU Datasheet - Page 407

• 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

26 AC – Analog Comparator
26.1 Analog Comparator Multiplexed Input
8266A-MCU Wireless-12/09
The Analog Comparator compares the input values on the positive pin AIN0 and
negative pin AIN1. When the voltage on the positive pin AIN0 is higher than the voltage
on the negative pin AIN1, the Analog Comparator output, ACO, is set. The comparator’s
output can be set to trigger the Timer/Counter1 Input Capture function. In addition, the
comparator can trigger a separate interrupt, exclusive to the Analog Comparator. The
user can select Interrupt triggering on comparator output rise, fall or toggle. A block
diagram of the comparator and its surrounding logic is shown in
The Power Reduction ADC bit PRADC in PRR0 (see
Register0" on page
ADC input multiplexer.
Figure 26-1. Analog Comparator Block Diagram
It is possible to select any of the ADC7:0 pins as the negative input of the Analog
Comparator. The ADC multiplexer is used to select this input and consequently the
ADC must be switched off to utilize this feature. If the Analog Comparator Multiplexer
Enable bit (ACME in ADCSRB) is set and the ADC is switched off (ADEN in ADCSRA is
zero), MUX5 and MUX2:0 in ADMUX select the input pin to replace the negative input
to the Analog Comparator, as shown in
is set, AIN1 is applied to the negative input to the Analog Comparator.
Table 26-1. Analog Comparator Multiplexed Input
Note:
ACME
0
1
1
1
1
1
1
1. See
2. Refer to
ADEN
pin placement.
1
0
0
0
0
0
x
Table 26-1
167) must be disabled by writing a logical zero to be able to use the
Figure 1-1 on page 2
MUX5
x
x
0
0
0
0
0
below.
MUX2:0
000
001
010
011
100
xxx
xxx
and
Table 26-1
Table 14-9 on page 197
Analog Comparator Negative Input
below. If ACME is cleared or ADEN
ATmega128RFA1
"PRR0 – Power Reduction
ADC0
ADC1
ADC2
ADC3
ADC4
AIN1
AIN1
Figure 26-1
for Analog Comparator
below.
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