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M24LR64-R-DW6T/2 数据表(PDF) 115 Page - STMicroelectronics |
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M24LR64-R-DW6T/2 数据表(HTML) 115 Page - STMicroelectronics |
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115 / 126 page  M24LR64-R RF DC and AC parameters Doc ID 15170 Rev 8 115/126 29 RF DC and AC parameters This section summarizes the operating and measurement conditions, and the DC and AC characteristics of the device in RF mode. The parameters in the DC and AC Characteristic tables that follow are derived from tests performed under the Measurement Conditions summarized in the relevant tables. Designers should check that the operating conditions in their circuit match the measurement conditions when relying on the quoted parameters. Table 105. RF AC characteristics(1) (2) 1. TA = –40 to 85 °C. 2. All timing measurements were performed between 0 °C and 50 °C on a reference antenna with the following characteristics: External size: 75 mm x 48 mm Number of turns: 6 Width of conductor: 1 mm Space between 2 conductors: 0.4 mm Value of the tuning capacitor: 28.5 pF (M24LR64-R-W4) Value of the coil: 4.3 µH Tuning frequency: 13.8 MHz. Symbol Parameter Condition Min Typ Max Unit fCC External RF signal frequency 13.553 13.56 13.567 MHz H_iso Operating field according to ISO TA = 0 °C to 50 °C 150 5000 mA/ m H_Extended Operating field in extended temperature range TA = –40 °C to 85 °C 150 3500 mA/ m MICARRIER 10% carrier modulation index MI=(A-B)/(A+B) 10 30 % tRFR,tRFF 10% rise and fall time 0.5 3.0 µs tRFSBL 10% minimum pulse width for bit 7.1 9.44 µs MICARRIER 100% carrier modulation index MI=(A-B)/(A+B) 95 100 % tRFR,tRFF 100% rise and fall time 0.5 3.5 µs tRFSBL 100% minimum pulse width for bit 7.1 9.44 µs tJIT Bit pulse jitter -2 +2 µs tMIN CD Minimum time from carrier generation to first data From H-field min 0.1 1 ms fSH Subcarrier frequency high FCC/32 423.75 kHz fSL Subcarrier frequency low FCC/28 484.28 kHz t1 Time for M24LR64-R response 4224/FS 318.6 320.9 323.3 µs t2 Time between commands 4224/FS 309 311.5 314 µs Wt RF write time (including internal Verify) 5.75 ms |
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