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ST7DALIF2 数据表(PDF) 139 Page - STMicroelectronics |
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ST7DALIF2 数据表(HTML) 139 Page - STMicroelectronics |
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139 / 171 page  ST7DALIF2 Electrical characteristics 139/171 Figure 69. Typical application with a crystal or ceramic resonator 20.6 Memory characteristics TA = -40°C to 85°C, unless otherwise specified Table 77. Typical ceramic resonators Supplier fCrOSC [MHz] Typical ceramic resonators(1) CL1 (2) [pF] CL2 (2) [pF] Rd [ Ω] Supply voltage range [V] Temperat ure range [°C] Type (3) Reference 2 SMD CSTCC2M00G56-R0 (47) (47) 0 2.4 V to 5.5 V -40 to 85 4 SMD CSTCR4M00G53-R0 (15) (15) 0 LEAD CSTLS4M00G53-B0 (15) (15) 0 8 SMD CSTCE8M00G52-R0 (10) (10) 0 LEAD CSTLS8M00G53-B0 (15) (15) 0 16 SMD CSTCE16M0V51-R0 (5) (5) 0 3.3 V to 5.5 V LEAD CSTLS16M0X53-B0 (15) (15) 0 4.5 V to 5.5 V LEAD CSALS16M0X55-B0 7 7 1.5k 3.8 V to 5.5 V 1. Resonator characteristics given by the ceramic resonator manufacturer. For more information on these resonators, please consult www.murata.com 2. () means load capacitor built in resonator 3. SMD = -R0: Plastic tape package (∅ =180mm). LEAD = -B0: Bulk OSC2 OSC1 fOSC CL1 CL2 i2 RESONATOR WHEN RESONATOR WITH INTEGRATED CAPACITORS Rd Table 78. RAM and hardware registers Symbol Parameter Conditions Min Typ Max Unit VRM Data retention mode (1) 1. Minimum VDD supply voltage without losing data stored in RAM (in Halt mode or under RESET) or in hardware registers (only in Halt mode). Guaranteed by construction, not tested in production. Halt mode (or RESET) 1.6 V |
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