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PDF ATA5771C Data sheet ( Hoja de datos )
| Número de pieza | ATA5771C | |
| Descripción | UHF ASK/FSK Transmitter | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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ATA5771C/73C/74C
UHF ASK/FSK Transmitter with the Atmel AVR
Microcontroller
DATASHEET
General Features
● Atmel® AVR® microcontroller and RF transmitter PLL in a single QFN24
5mm × 5mm package (pitch 0.65mm)
● Operating frequency ranges 310MHz to 350MHz, 429MHz to 439MHz and
868MHz to 928MHz
● Temperature range –40°C to +85°C
● Supply voltage 2.0V to 3.6V allowing usage of single Li-cell power supply
● Low power consumption
● Active mode: typical 9.8mA at 3.0V and 4MHz microcontroller-clock
● Power-down mode: Typical 200nA at 3.0V
● Modulation scheme ASK/FSK
● Integrated PLL loop filter
● Output power of 8dBm at 315MHz / 7.5dBm at 433.92MHz / 5.5dBm at 868.3MHz
● Easy to design-in due to excellent isolation of the PLL from the PA and power
supply
● Single-ended antenna output with high efficient power amplifier
● Very robust ESD protection: HBM 2500V, MM100V, CDM 1000V
● High performance, low power AVR 8-bit microcontroller
● Advanced RISC architecture
● Non-volatile program and data memories
● 4Kbytes of in-system programmable program memory flash
● 256Bytes in-system programmable EEPROM
● 256Bytes internal SRAM
● Programming lock for self-programming flash program and EEPROM data security
● Peripheral features
● Two timer/counter, 8- and 16-bit counters with two PWM channels on both
● 10-bit ADC
● On-chip analog comparator
● Programmable watchdog timer with separate on-chip oscillator
● Universal serial interface (USI)
9137J-RKE-10/14
1 page  
2. Pin Configuration
Figure 2-1. Pinning QFN24 5mm × 5mm
VCC
PB0
PB1
PB3/RESET
PB2
PA7
24 23 22 21 20 19
1 18
2 17
3 16
4 15
5 14
6 13
7 8 9 10 11 12
PA0
PA1
PA2
PA3/T0
PA4/USCK
PA5/MISO
Table 2-1.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Pin Description
Symbol
VCC
PB0
PB1
PB3/RESET
PB2
PA7
PA6 / MOSI
CLK
PA_ENABLE
ANT2
ANT1
GND
PA5/MISO
PA4/SCK
PA3/T0
PA2
PA1
PA0
GND
XTAL
VS_RF
GND_RF
ENABLE
GND
GND
Function
Microcontroller supply voltage
Port B is a 4-bit bi-directional I/O port with internal pull-up resistor
Port B is a 4-bit bi-directional I/O port with internal pull-up resistor
Port B is a 4-bit bi-directional I/O port with internal pull-up resistor/reset input
Port B is a 4-bit bi-directional I/O port with internal pull-up resistor
Port A is an 8-bit bi-directional I/O port with internal pull-up resistor
Port A is an 8-bit bi-directional I/O port with internal pull-up resistor
Clock output signal for microcontroller. The clock output frequency is set by the crystal to
fXTAL/4
Switches on power amplifier. Used for ASK modulation
Emitter of antenna output stage
Open collector antenna output
Ground
Port A is an 8-bit bi-directional I/O port with internal pull-up resistor
Port A is an 8-bit bi-directional I/O port with internal pull-up resistor
Port A is an 8-bit bi-directional I/O port with internal pull-up resistor
Port A is an 8-bit bi-directional I/O port with internal pull-up resistor
Port A is an 8-bit bi-directional I/O port with internal pull-up resistor
Port A is an 8-bit bi-directional I/O port with internal pull-up resistor
Microcontroller ground
Connection for crystal
Transmitter supply voltage
Transmitter ground
Enable input
Ground
Ground/backplane (exposed die pad)
ATA5771C/73C/74C [DATASHEET]
9137J–RKE–10/14
5
5 Page 
4. Microcontroller Block
These data are referred to the data base of microcontroller Atmel ATtiny44V.
4.1 Overview
The ATtiny44V is a low-power CMOS 8-bit microcontroller based on the Atmel AVR® enhanced RISC architecture. By
executing powerful instructions in a single clock cycle, the ATtiny44V achieves throughputs approaching 1MIPS per MHz
allowing the system designer to optimize power consumption versus processing speed.
4.2 Block Diagram
Figure 4-1. Block Diagram
VCC
GND
Program
Counter
8-bit Databus
Internal
Oscillator
Stack
Pointer
Watchdog
Timer
Internal
Calibrated
Oscillator
Timing
and Control
Program
Flash
Instruction
Register
Instruction
Decoder
Control
Lines
SRAM
General
Purpose
Registers
X
Y
Z
ALU
MCU Control
Register
MCU Status
Register
Timer/
Counter0
Timer/
Counter1
Status
Register
Interrupt
Unit
Programming
Logic
ISP
Interface
EEPROM
Oscillators
Data Register
Port A
Data Direction
Register Port A
ADC
Data Register
Port B
Data Register
Port B
Port A Drivers
Port B Drivers
PA7 to PA0
PB3 to PB0
ATA5771C/73C/74C [DATASHEET]
9137J–RKE–10/14
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ATA5771C.PDF ] | |
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