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参数资料
| 型号： | TRF7961RHBR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封装： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件页数： | 6/52页 |
| 文件大小： | 1023K |
| 代理商： | TRF7961RHBR |
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SLOU186F – AUGUST 2006 – REVISED AUGUST 2010
www.ti.com
After the reader EN line is high, the other power modes are selected by control bits. The power mode
options and functions are listed in Table 5-5.
Table 5-5. Power Modes
Byte
Option Bits Setting in Chip Status Control Register
EN
EN2
Functionality
Current
Address
B7
B6
B5
B4
B3
B2
B1
B0
STBY
RFON
RF PWR
REC ON
00
0
Complete power down
<1 mA
00
0
1
VDD_X available
120 mA
SYS_CLK auxiliary frequency 60 kHz is ON
00
1
x
1
x
All supply regulators active and in low power
1.5 mA
mode
13.56-MHz oscillator ON
SYS_CLK clock available
00
0
x
0
1
x
All supply regulators active
3.5 mA
13.56-MHz oscillator ON
SYS_CLK clock available
00
0
x
1
x
All supply regulators active
10 mA
13.56-MHz oscillator ON
SYS_CLK clock available
Receiver active
00
0
1
x
1
x
All supply regulators active
70 mA
13.56-MHz oscillator ON
(at 5 V)
SYS_CLK clock available
Receiver active
Transmitter active – half-power mode
00
0
1
0
x
1
x
All supply regulators active
120 mA
13.56-MHz oscillator running
(at 5 V)
SYS_CLK clock available
Receiver active
Transmitter active – full-power mode
During reader inactivity, the TRF7960/61 can be placed in power down-mode (EN = 0). The power down
can be complete (EN = 0, EN2 = 0) with no function running, or partial (EN = 0, EN = 1) where the
regulated supply (VDD_X) and auxiliary clock 60 kHz (SYS_CLK) are available to the MCU or other system
device.
When EN is set high (or on rising edge of EN2 and then confirmed by EN = 1), the supply regulators are
activated and the 13.56-MHz oscillator started. When the supplies are settled and the oscillator frequency
is stable, the SYS_CLK output is switched from the auxiliary frequency of 60 kHz to the selected
frequency derived from the crystal oscillator. At this point, the reader is ready to communicate and perform
the required tasks. The control system (MCU) can then write appropriate bits to the chip status control
register (address 00) and select the operation mode.
The STANDBY mode (bit 7 = 1 of register 00) is the active mode with the lowest current consumption. The
reader is capable of recovering from this mode to full operation in 100 ms.
The active mode with RF section disabled (bit 5 = 0 and bit 1 = 0 of register 00) is the next active mode
with low power consumption. The reader is capable of recovering from this mode to full operation in 25 ms.
The active mode with only the RF receiver section active (bit 1 = 1 of register 00) can be used to measure
the external RF field (as described in RSSI measurements paragraph) if reader-to-reader anticollision is
implemented.
The active mode with the entire RF section active (bit 5 = 1 of register 00) is the normal mode used for
transmit and receive operations.
14
System Description
Copyright 2006–2010, Texas Instruments Incorporated
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| TRF7961RHBRG4 | 功能描述:RFID应答器 Multi-Standard High Frequency RFID RoHS:否 制造商:Murata 存储容量:512 bit 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| TRF7961RHBT | 功能描述:RFID应答器 Multi-Standard High Freq RFid Reader RoHS:否 制造商:Murata 存储容量:512 bit 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| TRF7961RHBT | 制造商:Texas Instruments 功能描述:RFID Reader IC |
| TRF7961RHBTG4 | 功能描述:RFID应答器 Multi-Standard High Freq RFID Read/Writ RoHS:否 制造商:Murata 存储容量:512 bit 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| TRF7962A | 制造商:TI 制造商全称:Texas Instruments 功能描述:FULLY INTEGRATED 13.56-MHz RFID READER/WRITER IC FOR ISO15693/ISO18000-3 STANDARDS |
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