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LS7215 数据表(PDF) 7 Page - LSI Computer Systems |
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LS7215 数据表(HTML) 7 Page - LSI Computer Systems |
7 / 8 page 7215-072009-7 FIGURE 9. PROGRAMMABLE ACCURATE REAL-TIME DELAY GENERATION 18 11 12 13 14 15 16 17 19 V DD WB0 WB1 WB2 WB3 WB4 WB5 WB6 WB7 1 2 3 4 10M A B TRIG XTLI 5 XTLO 6 PSCLS 7 RESET 8 9 Vss OUT OUTPUT +V S1 +V 470k ƒ 25pF 25pF TRIGGER IN +V 1s/1m 2s/2m 4s/4m 8s/8m 16s/16m 32s/32m 64s/64m 128s/128m NOTE : Crystal Frequency, ƒ = 32,768Hz Switch: S1 low: Delay increment = 1s; Maximum Delay = 255s S1 high: Delay increment = 1m; Maximum Delay = 255m LS7216 s = seconds m = minutes MCU 8 WB0-WB7 WB0-WB7 LOAD LOAD LS7215/16 LS7215/16 IO IO IO FIGURE 10. LATCHING WEIGHTING BITS FROM A MCU ODOUT ODOUT +3V +3V +3V VSS VSS VSS VDD VDD VDD 20 20 3 3 8 8 11-18 11-18 (Example showing separate relay and logic supplies) +9V 10 +3V +18V 10 +3V |
类似零件编号 - LS7215 |
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类似说明 - LS7215 |
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