Features
• Programmable AVR® 8-bit Flash Microcontroller Transmitter IC
• Frequency: 315 MHz (ATA6285N) and 433 MHz (ATA6286N)
• Support ASK/FSK Modulation with Integrated FSK Switch
• 6 dBm Output Power with Typically 8.5 mA Active Current Consumption in
Transmission Mode
• Low-power Microcontroller Requires Typically 0.6 µA Sleep Current with Active Interval
Timer
• Interfaces for Simple Capacitive Sensors (2 pF to 6 pF)
• One Interface Can Be Configured for Motion Wake-up (3 pF to 5 pF)
• Typically 25 mbar ADC Resolution for Pressure Measurement with Dedicated Sensor
Type
TPMS Control
and Transmitter
IC
• Low-power Measurement Mode for Directly Connected Capacitive Sensors Typically
200 µA at 1 MHz System Clock
• Programmable 125 kHz Wake-up Receiver Channel with Typically 1.7 µA Current
Consumption in Listing Mode
ATA6285N
ATA6286N
• 2V to 3.6V Operation Voltage for Single Li-cell Power Supply
• –40°C to +125°C Operation Temperature and –40°C to +150°C Storage Temperature
• Less then 10 External Passive Components
• QFN32 (5 mm × 5 mm) Package
Summary
1. Description
ATA6285N and ATA6286N are highly integrated smart RF micro transmitter ICs for
315 MHz and 433 MHz, suited for ASK and FSK with typically 20 Kbits/s data rate in
Manchester mode. The devices combine the functionality of the RF transmitter ICs
ATA5756/ATA5757 with the programmable low-power AVR 8-bit Flash microcontroller
in a single QFN32 package (5 mm × 5 mm). The ATA6285N and ATA6286N include a
dedicated ADC interface for simple capacitive sensors as well as an on-chip tempera-
ture sensor. Three sensor interfaces are available for a capacitive range of 2 pF to
16 pF, where one channel can be configured as motion wake-up in the range of 3 pF
to 5 pF. The ICs are suited for use in tire pressure monitoring (TPMS) sensor gauges
in combination with external sensor devices.
Preliminary
The programmable AVR 8-bit Flash microcontroller includes 8 Kbytes of in-system
self-programmable Flash memory and an 320-Bytes EEPROM, thus allowing the sys-
tem integrator to install field-programmable firmware to enable system flexibility on
different platforms. ATA6285N and ATA6286N can be configured to guarantee
extremely low power consumption in sleep mode and measurement mode. They also
include a programmable 125 kHz wake-up receiver channel for extremely low current
consumption in listening mode. The ICs are designed for use in applications with typi-
cally less then 10 passive components: one external crystal for the sensor gauge,
several capacitors, a single LiMnO2 battery coin cell, a single-ended antenna for the
data transmission and an LF ferrite coil for the wake-up channel. ATA6285N and
ATA6286N support TPMS-specific low-current modes even with an active brown-out
detection and an interval timer.
NOTE: This is a summary document.
The complete document is available
under NDA. For more information,
please contact your local Atmel sales
office.
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