AT86RF212-ZU datasheet(7/173 Pages) ATMEL

部件名	AT86RF212-ZU

功能描述	Low Power 800/900 MHz Transceiver for IEEE 802.15.4- 2006, ZigbeeTM, and ISM Applications

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制造商	ATMEL [ATMEL Corporation]

网页	http://www.atmel.com

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8168A-AVR-06/08

AT86RF212

2.2.1.3 Crystal Oscillator Pins

XTAL1, XTAL2

The pin XTAL1 is the input of the reference oscillator amplifier (XOSC), XTAL2 the

output. A detailed description of the crystal oscillator setup and the related

XTAL1/XTAL2 pin configuration can be found in section 7.7.

When using an external clock reference signal, XTAL1 shall be used as input pin. For

further details refer to section 7.7.3.

2.2.1.4 Analog Pin Summary

Table 2-2. Analog Pin Behavior – DC values

Values and Conditions

Comments

RFP/RFN

VDC = 0.9 V (BUSY_TX)

VDC = 20 mV (receive states)

VDC = 0 mV (otherwise)

DC level at pins RFP/RFN for various transceiver states

AC-coupling is required if an antenna with a DC path to ground is

used. Serial capacitance and capacitance of each pin to ground

must be < 100 pF.

XTAL1/XTAL2

VDC = 0.9 V at both pins

CPAR = 3 pF

VAC ≤ 1.0 Vpp

DC level at pins XTAL1/XTAL2 for various transceiver states

Parasitic capacitance (Cpar) of the pins must be considered as

additional load capacitance to the crystal.

DVDD

VDC = 1.8 V (all states, except P_ON, SLEEP,

and RESET)

VDC = 0 mV (otherwise)

DC level at pin DVDD for various transceiver states

Supply pins (voltage regulator output) for the digital 1.8 V voltage

domain. The outputs shall be bypassed by 1 µF.

AVDD

VDC = 1.8 V (all states, except P_ON, SLEEP,

RESET, and TRX_OFF)

VDC = 0 mV (otherwise)

DC level at pin AVDD for various transceiver states

Supply pin (voltage regulator output) for the analog 1.8 V voltage

domain. The outputs shall be bypassed by 1 µF.

2.2.2 Digital Pins

The AT86RF212 provides a digital microcontroller interface. The interface comprises a

slave SPI (/SEL, SCLK, MOSI and MISO) and additional control signals (CLKM, IRQ,

SLP_TR, /RST and DIG2). The microcontroller interface is described in detail in chapter

4.

Additional digital output signals DIG1 … DIG4 are provided to control external blocks,

i.e. for Antenna Diversity RF switch control or as an RX/TX Indicator, see sections 9.3

and 9.4, respectively. After reset, these pins are connected to digital ground

(DIG1/DIG2) or analog ground (DIG3/DIG4).

2.2.2.1 Driver Strength Settings

The driver strength of all digital output pins (MISO, IRQ, DIG1, …, DIG4) and CLKM pin

can be configured using register 0x03 (TRX_CTRL_0), see Table 2-3.

Table 2-3. Digital Output Driver Configuration

Default Driver Strength

Comment

MISO, IRQ, DIG1, …, DIG4

2 mA

Adjustable to 2 mA, 4 mA, 6 mA, and 8 mA

CLKM

4 mA

Adjustable to 2 mA, 4 mA, 6 mA, and 8 mA

The capacitive load should be as small as possible and not larger than 50 pF when

using the 2 mA minimum driver strength setting. Generally, the output driver strength

类似零件编号 - AT86RF212-ZU

制造商	部件名	数据表	功能描述
ATMEL Corporation	AT86RF212-ZU	1Mb / 171P	Low Power 700/800/900 MHz

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