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PSD501B1 Datasheet(PDF) 62 Page - STMicroelectronics |
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PSD501B1 Datasheet(HTML) 62 Page - STMicroelectronics |
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62 / 153 page  PSD5XX Family 59 CLR CLK APD COUNTER APD CLK PMMR1 - BIT 0 TO OTHER CIRCUITS MUX APD CLEAR LOGIC APD ENABLE PMMR0 - BIT 2 ALE POLARITY PMMR0 - BIT 1 ALE RESET APD CLK CLKIN CSI SLEEP – ENABLE PMMR1 - BIT 1 SLEEP MODE EPROM SELECT SRAM SELECT I/O SELECT POWER DOWN PD Z P L D Figure 30. Power Management Unit Figure 30a. Automatic Power Down Unit (APD) Flow Chart APD DISABLED NEED APD CLK YES YES NO NO RESET SET APD CLK IN PMMR1 BIT 0 SET ALE PD POLARITY IN PMMRO BIT 1 CSI = "1" NEED SLEEP MODE SET SLEEP MODE IN PMMR1 BIT 1 ALE IDLE and 15 APD CLOCK ALE IDLE and 15 APD CLOCK • SET ENABLE APD IN PMMR0 BIT 2 • SET PMMR0 BIT 0 • SET ENABLE APD IN PMMR0 BIT 2 • SET PMMR0 BIT 0 DISABLE CLOCKS ZPLD ACLK, ZPLD RCLK, TMR ZPLD DISABLE CLOCKS ZPLD ACLK, ZPLD RCLK, TMR ZPLD PSD IN POWER DOWN MODE PSD IN SLEEP MODE Power Management Unit (Cont.) |
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