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CY8C4128FNI-BL473 Fiches technique(PDF) 30 Page - Cypress Semiconductor |
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CY8C4128FNI-BL473 Fiches technique(HTML) 30 Page - Cypress Semiconductor |
30 / 47 page PRELIMINARY PSoC® 4: PSoC 4XX8_BLE Family Datasheet Document Number: 001-94624 Rev. *K Page 30 of 47 System Resources Power-on-Reset (POR) Note 5. It can take as much as 20 milliseconds to write to flash. During this time, the device should not be reset, or flash operations will be interrupted and cannot be relied on to have completed. Reset sources include the XRES pin, software resets, CPU lockup states and privilege violations, improper power supply levels, and watchdogs. Make certain that these are not inadvertently activated. Table 38. Flash AC Specifications Spec ID Parameter Description Min Typ Max Units Details/Conditions SID250 TROWWRITE[5] Row (block) write time (erase and program) – – 20 ms Row (block) = 256 bytes SID251 TROWERASE[5] Row erase time – – 13 ms – SID252 TROWPROGRAM[5] Row program time after erase – – 7 ms – SID253 TBULKERASE[5] Bulk erase time (256 KB) – – 35 ms – SID254 TDEVPROG[5] Total device program time – – 50 seconds For 256 KB SID255 FEND Flash endurance 100 K – – cycles – SID256 FRET Flash retention. TA 55 °C, 100 K P/E cycles 20 – – years – SID257 FRET2 Flash retention. TA 85 °C, 10 K P/E cycles 10 – – years – Table 39. POR DC Specifications Spec ID Parameter Description Min Typ Max Units Details/Conditions SID258 VRISEIPOR Rising trip voltage 0.80 – 1.45 V – SID259 VFALLIPOR Falling trip voltage 0.75 – 1.40 V – SID260 VIPORHYST Hysteresis 15 – 200 mV – Table 40. POR AC Specifications Spec ID Parameter Description Min Typ Max Units Details/Conditions SID264 TPPOR_TR PPOR response time in Active and Sleep modes ––1 µs – Table 41. Brown-Out Detect Spec ID# Parameter Description Min Typ Max Units Details/ Conditions SID261 VFALLPPOR BOD trip voltage in Active and Sleep modes 1.64 – – V – SID262 VFALLDPSLP BOD trip voltage in Deep Sleep mode 1.4 – – V – Table 42. Hibernate Reset Spec ID# Parameter Description Min Typ Max Units Details/ Conditions SID263 VHBRTRIP BOD trip voltage in Hibernate mode 1.1 – – V – |
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