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ST7260 数据表(PDF) 92 Page - STMicroelectronics |
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ST7260 数据表(HTML) 92 Page - STMicroelectronics |
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92 / 117 page  ST7260 92/117 13.6 MEMORY CHARACTERISTICS Subject to general operating conditions for fCPU, and TA unless otherwise specified. 13.6.1 RAM and Hardware Registers Note: 1. Guaranteed by design. Not tested in production. 13.6.2 Flash Memory Operating Conditions: fCPU = 8 MHz. Note: 1. Refer to the Flash Programming Reference Manual for the typical HDFlash programming and erase timing values. Figure 47. Two typical Applications with VPP Pin 1) Note: 1. When the ICP mode is not required by the application, VPP pin must be tied to VSS. Symbol Parameter Conditions Min Typ Max Unit VRM Data retention mode 1) HALT mode (or RESET) 2.0 V DUAL VOLTAGE FLASH MEMORY 1) Symbol Parameter Conditions Min Typ Max Unit fCPU Operating Frequency Read mode 8 MHz Write / Erase mode, TA=25°C 8 VPP Programming Voltage 4.0V ≤V DD ≤ 5.5V 11.4 12.6 V IPP VPP Current Write / Erase 30 mA tVPP Internal VPP Stabilization Time 10 µs tRET Data Retention TA ≤ 55°C 40 years NRW Write Erase Cycles TA=25°C 100 cycles VPP ST72XXX 10k Ω PROGRAMMING TOOL VPP ST72XXX |
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