MAX66140K-000AA+【PDF 6/21 页】IC RFID UID 64BIT TYPE B KEY FOB

您好，
买卖IC网欢迎您。
请登录
免费注册

2页 3页 4页 5页 [6页]7页 8页 9页 10页

ABRIDGED DATA SHEET

ISO 15693-Compliant Secure Memory

full details including graphics of the data coding

schemes and SOF/EOF timing, refer to ISO 15693-2,

Sections 7.2, 7.3, and 8.

The path from master to slave uses amplitude modula-

tion (Figure 6); the modulation index can be either in

the range of 10% to 30% or 100% (ISO 15693-2,

Section 7.1). The standard defines two pulse-position

coding schemes that must be supported by a compli-

ant device. Scheme A uses the “1 out of 256” method

(Figure 7), where the transmission of 1 byte takes

4.833ms, equivalent to a data rate of 1655 bits/s. The

location of a modulation notch during the 4.833ms con-

veys the value of the byte. Scheme B uses the “1 out

of 4” method (Figure 8), where the transmission of 2

bits takes 75.52μs, equivalent to a data rate of 26,484

bits/s. The location of a modulation notch during the

CARRIER

AMPLITUDE

100%

t

Figure 6. Downlink Modulation (e.g., Approximately 100%

Amplitude Modulation)

PULSE-

MODULATED

CARRIER

75.52μs conveys the value of the 2 bits. A byte is trans-

mitted as a concatenation of four 2-bit transmissions,

with the least significant 2 bits of the byte being trans-

mitted first. The transmission of the SOF pattern takes

the same time as transmitting 2 bits in Scheme B. The

SOF pattern has two modulation notches, making it dis-

tinct from any 2-bit pattern. The position of the second

notch tells whether the frame uses the “1 out of 256” or

“1 out of 4” coding scheme (Figures 9 and 10, respec-

tively). The transmission of the EOF pattern takes

37.76μs; the EOF is the same for both coding schemes

and has one modulation notch (Figure 11).

The path from slave to master uses one or two subcar-

riers, as specified by the Subcarrier_flag bit in the

request data packet. The standard defines two data

rates for the response, low (approximately 6,600 bits/s)

and high (approximately 26,500 bits/s). The

Data_rate_flag bit in the request data packet specifies

the response data rate. The data rate varies slightly

depending on the use of one or two subcarriers. The

LSb is transmitted first. A compliant device must sup-

port both subcarrier modes and data rates.

In the single subcarrier case, the subcarrier frequency

is 423.75kHz. One bit is transmitted in 37.76μs (high

data rate) or 151μs (low data rate). The modulation is

the on/off key. For a logic 0, the subcarrier is on during

the first half of the bit transmission time and off for the

second half. For a logic 1, the subcarrier is off during

the first half of the bit transmission time and on for the

second half. See Figure 12 for more details.

In the two subcarrier cases, the subcarrier frequencies

are 423.75kHz and 484.28kHz. The bit duration is the

same as in the single subcarrier case. The modulation

is equivalent to binary FM. For a logic 0, the lower sub-

carrier is on during the first half of the bit transmission

time, switching to the higher subcarrier for the second

half. For a logic 1, the higher subcarrier is on during the

~ 9.44 μ s

~ 18.88 μ s

0 1 2 3 4

.

.

.

.

.

2

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

2 2 2 2

Figure 7. Downlink Data Coding (Case “1 Out of 256”)

2

5

~ 4.833ms

5 5 5 5

2 3 4 5

8

_______________________________________________________________________________________

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

我的联系方式

*

*

*

相关PDF资料

MAX6667AUT+T IC TEMP SENSOR PWM OUT SOT23-6

MAX6672AXK+T IC TEMP SENSOR PWM OUT SC70-5

MAX6676AUT+T IC TEMP SENSOR PWM OUT SOT23-6

MAX6686UA75L+ IC SW TEMP DUAL OUT 8-UMAX

MAX6688AU40H+ IC SW TEMP REMOTE 8-UMAX

MAX66901-K00# KIT DEV ISO 14443B/15693 RFID

MAX7030HATJ+T IC TRANSCEIVER ASK 32-TQFN

MAX7031MATJ50+T IC TXRX FSK W/PLL 32TQFN-EP

相关代理商/技术参数

MAX66140K-00AA+ 制造商:Maxim Integrated Products 功能描述:ISO 15693-COMPLIANT SECURE MEMORY FOB - Rail/Tube

MAX6615AEE 功能描述:马达/运动/点火控制器和驱动器 RoHS:否制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube

MAX6615AEE+ 功能描述:板上安装温度传感器 Dual Ch Temperature Monitor RoHS:否制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor

MAX6615AEE+T 功能描述:板上安装温度传感器 Dual Ch Temperature Monitor RoHS:否制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor

MAX6615AEE-T 功能描述:马达/运动/点火控制器和驱动器 RoHS:否制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube

MAX6616AEG 功能描述:板上安装温度传感器 Dual Ch Temperature Monitor RoHS:否制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor

MAX6616AEG+ 功能描述:板上安装温度传感器 Dual Ch Temperature Monitor RoHS:否制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor

MAX6616AEG+T 功能描述:板上安装温度传感器 Dual Ch Temperature Monitor RoHS:否制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor