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PSD502B1-C-70J Datasheet(PDF) 7 Page - STMicroelectronics |
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PSD502B1-C-70J Datasheet(HTML) 7 Page - STMicroelectronics |
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7 / 153 page  PSD5XX Family 4 Key Features (cont.) t Programmable power management allows: • SRAM, EPROM, and ZPLDs to enter standby mode automatically • Disabling of the clock input to the ZPLDs • ZPLDs to enter a special low power mode (Sleep Mode), based on Turbo bit setting t A security bit prevents reading the PSD5XX configuration and the ZPLD contents. Setting this bit will prevent the device from being copied on a device programmer. t Built-in security enables the user to block read accesses from a device programmer t Package choices include a 68-pin PLCC and CLDCC, and an 80-pin TQFP. t Programmable polarity Reset output (includes hysteresis), based on Reset input t Simple, menu-driven software (PSDsoft) allows configuration and design entry on a PC. 3.0 Notation Throughout this data sheet, references are made to the PSD5XX. In most cases, these references also cover the ZPSD5XX and ZPSD5XXV products. Exceptions will be noted. The main difference between the ZPSD5XX and the PSD5XX is the standby current (Isb). The ZPSD5XX devices have been rated for a lower standby current. Also, there is no low-voltage version of the PSD5XX. There is only the low-voltage version of the ZPSD5XX, which has a V suffix. 4.0 ZPSD Background Portable and battery powered systems have recently become major embedded control application segments. As a result, the demand for electronic components having extremely low power consumption has increased dramatically. Recognizing this need, WSI, Inc. has developed a new Zero-Power technology. ZPSD products virtually eliminate the DC component of power consumption reducing it to standby levels. Eliminating the DC component is the basis for the words “Zero Power”. ZPSD products also minimize the AC power component when the chip is changing states. The result is a programmable microcontroller peripheral family that replaces discrete circuit functions while drawing minimal power. |
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