ATA5771

General Features Complete Key Fob IC Consisting of an AVR® Microcontroller and RF Transmitter PLL in a Single QFN24 5 mm × 5 mm Package (Pitch 0.65 mm) – f0 = 310 MHz to 350 MHz (ATA5773) – f0 = 429 MHz to 439 MHz (ATA5774) – f0 = 868 MHz to 928 MHz (ATA5771) Automotive Qualified Temperature Range –40° C to +85° C ESD Protection: HBM 2500V, MM 100V, CDM 1000V Supply voltage 2.0V to 4.0V for Single Li-cell Power Supply Low Power Consumption – Active Mode: Typical 9.8 mA at 3.0V and 4 MHz Microcontroller-clock – Power-down Mode: Typical 200 nA at 3.0V Modulation Scheme ASK/FSK Integrated PLL Loop Filter High Output Power (8 dBm at 315 MHz/7.5 dBm at 433 MHz/ 5.5 dBm at 868 MHz) High Performance, Low Power AVR 8-bit Microcontroller Advanced RISC Architecture Non-volatile Program and Data Memories – 4 KByte of In-system Programmable Program Memory Flash – 256 Bytes In-system Programmable EEPROM – 256 Bytes Internal SRAM Peripheral Features – Two Timer/Counter, 8- and 16-bit Counters with Two PWM Channels on Both – 10-bit ADC – Programmable Watchdog Timer with Separate On-chip Oscillator – Universal Serial Interface (USI) Special Microcontroller Features – debugWIRE On-chip Debug System – In-system Programmable via SPI Port – External and Internal Interrupt Sources – Pin Change Interrupt on 12 Pins – Enhanced Power-on Reset Circuit – Programmable Brown-out Detection Circuit – Internal Calibrated Oscillator – On-chip Temperature Sensor 12 Programmable I/O Lines ...