Datasheet > ATA5570-TAQY

ATA5570-TAQY

更新时间： 2022-12-19 08:43:46

品牌	Logo	应用领域
爱特美尔 - ATMEL		传感器射频
页数	文件大小	规格书
28页	570K
描述
Multifunctional 330-bit Read/Write RF Sensor Identification IC

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中文翻译

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ATA5570-TAQY 数据手册

5. Operating the ATA5570

5.1

Initialization and POR Delay

The Power-On-Reset (POR) circuit remains active until an adequate voltage threshold has been

reached. This in turn triggers the default start-up delay sequence. During this configuration

period of about 192 field clocks, the ATA5570 is initialized with the configuration data stored in

EEPROM block 0. If the POR delay bit is reset, no additional delay is observed after the configu-

ration period. Tag modulation in regular-read mode will be observed about 3 ms after entering

the RF field. If the POR delay bit is set, the ATA5570 remains in a permanent damping state until

8190 internal field clocks have elapsed.

T_INIT= (192 + 8190 × POR delay) × T_C≈ 67 ms;

T_C= 8 µs at 125 kHz

Any field gap occurring during this initialization phase will restart the complete sequence. After

this initialization time the ATA5570 enters regular-read mode and modulation starts automati-

cally, using the parameters defined in the configuration register.

5.2

5.3

Tag-to-reader Communication

During normal operation, the data stored within the EEPROM is cycled and the COIL1 and

COIL2 terminals are load modulated. This resistive load modulation can be detected at the

reader module.

Regular-read Mode

In regular-read mode, data from the memory is transmitted serially, starting with block 1, bit 1, up

to the last block (e.g., 7), bit 32. The last block which will be read is defined by the mode param-

eter field MAXBLK in EEPROM block 0. When the data block addressed by MAXBLK has been

read, data transmission restarts with block 1, bit 1.

The user may limit the cyclic datastream in regular-read mode by setting the MAXBLK between

0 and 7 (representing each of the 8 data blocks). If set to 7, blocks 1 through 7 can be read. If set

to 1, only block 1 is transmitted continuously. If set to 0, the contents of the configuration block

(normally not transmitted) can be read. In the case of MAXBLK = 0 or 1, regular-read mode can

not be distinguished from block-read mode.

Figure 5-1. Examples of Different MAXBLK Settings

Block 1

Loading block 0

Block 4

Block 5

Block 1

Block 2

Block 1

MAXBLK = 5

MAXBLK = 2

MAXBLK = 0

Block 1

Block 2

Block 1

Loading block 0

Block 0

Loading block 0

Every time the ATA5570 enters regular- or block-read mode, the first bit transmitted is a logical

“0”. The data stream starts with block 1, bit 1, continues through MAXBLK, bit 32, and cycles

continuously if in regular-read mode.

This behavior is different from the original e555x and helps to decode PSK-modulated data.

ATA5570 [Preliminary]

4863A–RFID–07/05

1...5 6 789 10 11...28

中文翻译

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ATA5575M1330-DBQ	MICROCHIP	IC RFID 128BIT EE 330PF UID BUMP	获取价格
ATA5575M1330-DBQ	ATMEL	Analog Circuit,	获取价格
ATA5575M1330-DDB	MICROCHIP	IC RFID 128BIT 330PF DIE	获取价格
ATA5575M1330-DDB	ATMEL	Analog Circuit, 1 Func, DIE-2	获取价格
ATA5575M133L-DBB	ATMEL	Analog Circuit,	获取价格
ATA5575M133L-DDB	ATMEL	Analog Circuit,	获取价格
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ATA5575M2330-DBB	MICROCHIP	IC RFID IDIC R/W 128BIT WAFER	获取价格
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ATA5577_13	ATMEL	Contactless Power Supply Contactless Read/Write Data Transmission	获取价格
ATA5577M1330C-DDB	ATMEL	Telecom Circuit	获取价格
ATA5577M1330C-DDW	MICROCHIP	Telecom Circuit	获取价格
ATA5577M1330C-PAE	ATMEL	Telecom Circuit,	获取价格
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ATA5577M1330C-PPMY	MICROCHIP	IC ID R/W TRANSPONDER PLASTIC	获取价格
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