Datasheet > ATA5551M-PP

ATA5551M-PP

更新时间： 2024-02-29 00:54:04

品牌	Logo	应用领域
爱特美尔 - ATMEL		电信电信集成电路
页数	文件大小	规格书
11页	546K
描述
Telecom Circuit

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技术参数
数据手册

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ATA5551M-PP 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8523.59.00.00	风险等级：	5.69
JESD-30 代码：	X-XXSS-X	功能数量：	1
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	UNSPECIFIED	封装形状：	UNSPECIFIED
封装形式：	SPECIAL SHAPE	表面贴装：	NO
电信集成电路类型：	TELECOM CIRCUIT	温度等级：	INDUSTRIAL
端子形式：	UNSPECIFIED	端子位置：	UNSPECIFIED
Base Number Matches：	1

ATA5551M-PP 数据手册

Measured write-time frames of the IDIC demo kit software are:

t₀= 50µs to 130µs

t₁= 270µs to 390µs

t_gap= 180µs to 400µs

Antennas with a high Q-factor require longer times for t_gapand shorter time values for t₀and t₁.

Figure 10-1. Ideal and Real Behavior Signals

t₁

t_gapt₀

t₁

t_gapt₀

Coil

voltage

Coil

voltage

t_{1 internal}

t_{0 internal}

Gap detect

Ideal behavior

RF level reduces to zero immediately

Actual behavior

RF level decreases exponentially

11. Operating Distance

The maximum distance between the base station and the Atmel^®ATA5551 depends mainly on

the reader station, the coil geometries and the modulation options chosen (see “U2270B

Antenna Design Hints” and the “U2270B” datasheet). Under laboratory conditions, a distance of

up to 9cm can be reached. When using the Atmel RFID demo kit ATA2270-EK1, the typical

distances in the range of 0cm to 5cm can be achieved.

11.1 Anti-collision Mode by Password Request (AOR = Answer-On-Request)

The AOR mode is an anti-collision procedure for transponders to read, e.g., ten transponders in

the field during 500ms (RF/32, maxblock 2). The number of transponders and the time to read

out are dependent on the application.

If the AOR mode has been configured by AOR bit at block 0, the transponder remains in sleep

mode while putting it into the field. If the specified AOR wake-up command is sent, the dedicated

transponder generates an internal RESET (see section “OP Code Formats” in the Atmel e5551

datasheet). Due to the RESET the transponder is woken up. That means, the transponder is

able to modulate the field (read mode). The AOR wake-up command consists of the OP code

and the 32-bit password. The time duration to send the AOR wake-up sequence is between

8.7ms and 27.5ms according to Figure 10-1. The time duration is dependent on the mini-

mum/maximum values of the measured write-time frames and the content of the password.

To select another transponder in the field, it is necessary to send the stop OP code to stop the

modulation of the transponder.

Atmel ATA5551

9211A–RFID–10/10

1...5 6 789 10 11

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