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参数资料
| 型号： | E5561 |
| 英文描述： | e5561 Advance Information [Updated 4/03. 26 Pages] Read/Write transponder IC for contactless RF identification for highly sophisticated security applications. |
| 中文描述： | e5561推进信息[更新4 / 03。 26页]读/写非接触式射频转发器的高度复杂的安全应用识别芯片。 |
| 文件页数： | 23/26页 |
| 文件大小： | 410K |
| 代理商： | E5561 |
6
e5561
4699A–RFID–04/03
Adapt
The e5561 is able to minimize the tolerance of the resonance frequency between the
base station and the transponder by switching on-chip capacitors in parallel to the LC
circuit of the transponder. By using a coil of approximately 4 mH for a resonance fre-
quency of 125 kHz it is possible to tune the resonance frequency in a range of about
5%. The active value of the adaptation function is carried out automatically every time
the e5561 enters the RF field or when the EEPROM is read out. This depends on a con-
trol bit. The automatic adaptation stops when the optimized adaptation has been
reached. This is between 1.0 ms and 5.0 ms (125 kHz) depending on the capacitance
value required. The voltage at Coil 1/Coil 2 after start-up is shown in Figure 8.
Adapt Bits: Details
In addition to the adapt mode, which is executed during the start-up phase by the IC
itself, it is possible to set the adapt bits in the EEPROM manually.
Before carrying out the manual setting of the adapt bits, bit A in block 0 must be set to 1
(see Figure 8).
The content of these 3 bits, that need to be defined, determines the transponder’s
response frequenzy in a limited range.
Bits are set by programming block 0 in the microcontroller.
Bit-rate Generator
The bit-rate generator can deliver bit rates of RF/32 and RF/64 for data transmission
from the e5561 to the base station.
Bit Decoder
The bit decoder forms the signals needed for write operations and decodes the received
data bits in the write data stream.
Modulator
The modulator consists of two data encoders and the terminator generator. There are
two kinds of modulation:
Manchester
–
Mid-bit rising edge = data H
–
Mid-bit falling edge = data L
Bi-phase
–
Every bit creates a change, a data 0 creates an additional mid-bit change
By using Bi-phase modulation, data transmission always starts with damping on.
HV Generator
The HV generator is a voltage pump which generates about 18 V for programming the
EEPROM.
Memory
The memory of the e5561 is a 320-bit EEPROM which is arranged in 10 blocks of 32
bits each. All 32 bits of a block are programmed simultaneously. The programming volt-
age is generated on-chip.
Block 0 is reserved for basic configuration data. Blocks 1 to 9 are freely programmable.
Blocks 1 to 4 are used for the ID code, blocks 5 to 8 contain the crypto key. In password
mode, bits 4 to 31 of block 9 contain the password; bits 0 to 3 of block 9 contain the cus-
tomer-configuration data. If no password is required, the corresponding bits can be
programmed freely.
Note:
Data from the memory is transmitted serially, starting with the least significant bit.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| E5561_06 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Standard Read/Write Crypto Identification IC |
| e5561A-DOW | 功能描述:射频无线杂项 Encryption w/unique options RoHS:否 制造商:Texas Instruments 工作频率:112 kHz to 205 kHz 电源电压-最大:3.6 V 电源电压-最小:3 V 电源电流:8 mA 最大功率耗散: 工作温度范围:- 40 C to + 110 C 封装 / 箱体:VQFN-48 封装:Reel |
| E5562-00L022-L | 功能描述:以太网和电信连接器 RJ11 6P2C SIDE ENTRY RoHS:否 制造商:Pulse 产品:Modular Jacks 性能类别: USOC 代码:RJ45 位置/触点数量: 安装风格:Through Hole 端口数量:1 x 1 型式:Female 屏蔽: 电流额定值: 电压额定值: 触点电镀: 外壳材料:Thermoplastic IP 等级: |
| E5562-60L121-L | 功能描述:以太网和电信连接器 RJ11 6P2C SIDE ENTRY RoHS:否 制造商:Pulse 产品:Modular Jacks 性能类别: USOC 代码:RJ45 位置/触点数量: 安装风格:Through Hole 端口数量:1 x 1 型式:Female 屏蔽: 电流额定值: 电压额定值: 触点电镀: 外壳材料:Thermoplastic IP 等级: |
| E5562-60LU22-L | 功能描述:以太网和电信连接器 RJ11 6P2C SIDE ENTRY RoHS:否 制造商:Pulse 产品:Modular Jacks 性能类别: USOC 代码:RJ45 位置/触点数量: 安装风格:Through Hole 端口数量:1 x 1 型式:Female 屏蔽: 电流额定值: 电压额定值: 触点电镀: 外壳材料:Thermoplastic IP 等级: |
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