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Features
• • • • • • • •
Single Package Fully-integrated ROM Mask 4-bit Microcontroller with RF Transmitter Low Power Consumption in Sleep Mode (< 1 µA Typically) Maximum Output Power (10 dBm) with Low Supply Current (9.5 mA Typically) 2.0 V to 4.0 V Operation Voltage for Single Li-cell Power Supply -40°C to +125°C Operation Temperature SSO24 Package About Seven External Components Flash Controller for Application Program Available
Description
The ATAR862-4 is a single package triple-chip circuit. It combines a UHF ASK/FSK transmitter with a 4-bit microcontroller and a 512-bit EEPROM. It supports highly integrated solutions in car access and tire pressure monitoring applications, as well as manifold applications in the industrial and consumer segment. It is available for the frequency range of 429 MHz to 439 MHz with data rates up to 32 kbaud. For further frequency ranges such as 310 MHz to 330 MHz and 868 MHz to 928 MHz separate data sheets are available. The device contains a ROM mask version microcontroller and an additional data EEPROM.
Microcontroller with UHF ASK/FSK Transmitter ATAR862-4 Preliminary
Figure 1. Application Diagram
ATAR862-4
Antenna
Keys
Microcontroller
PLLTransmitter
UHF ASK/FSK Receiver
Microcontroller
Rev. 4552B–4BMCU–02/03
1
Pin Configuration
Figure 2. Pinning SSO24
XTAL VS GND ENABLE NRESET BP63/T3I BP20/NTE BP23 BP41/T2I/VMI BP42/T2O BP43/SD/INT3 VSS 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 ANT1 ANT2 PA_ENABLE CLK BP60/T3O OSC2 OSC1 BP50/INT6 BP52/INT1 BP53/INT1 BP40/SC/INT3 VDD
Pin Description: RF Part
Pin 1 Symbol XTAL Function Connection for crystal
1.5k
Configuration
VS 1.2k VS
XTAL
182 mA
2 3 4
VS GND ENABLE
Supply voltage Ground Enable input
ESD protection circuitry (see Figure 8) ESD protection circuitry (see Figure 8)
ENABLE 200k
2
ATAR862-4
4552B–4BMCU–02/03
ATAR862-4
Pin Description: RF Part (Continued)
Pin 21 Symbol CLK Function Clock output signal for microcontroller The clock output frequency is set by the crystal to fXTAL/4
100 100
Configuration
VS
CLK
22
PA_ENABLE
Switches on power amplifier, used for ASK modulation
PA_ENABLE
50k
Uref=1.1V
20 mA
23 24
ANT2 ANT1
Emitter of antenna output stage Open collector antenna output
ANT1
ANT2
Pin Description: Microcontroller Part
Name VDD VSS BP20 BP40 BP41 BP42 BP43 BP50 BP52 BP53 BP60 BP63 OSC1 OSC2 NRESET Type – – I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I O I/O Function Supply voltage Circuit ground Bi-directional I/O line of Port 2.0 Bi-directional I/O line of Port 4.0 Bi-directional I/O line of Port 4.1 Bi-directional I/O line of Port 4.2 Bi-directional I/O line of Port 4.3 Bi-directional I/O line of Port 5.0 Bi-directional I/O line of Port 5.2 Bi-directional I/O line of Port 5.3 Bi-directional I/O line of Port 6.0 Bi-directional I/O line of Port 6.3 Oscillator input Oscillator output Bi-directional reset pin Alternate Function – – NTE-test mode enable, see also section "Master Res.