psd511b1 STMicroelectronics, psd511b1 Datasheet - Page 7

• Manufacturer Part Number: psd511b1
• Description: Low Cost Field Programmable Microcontroller Peripherals
• Manufacturer: STMicroelectronics

Key Features
(cont.)
3.0
Notation
4.0
ZPSD
Background
4
PSD5XX Family
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.
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.
Programmable power management allows:
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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.
Built-in security enables the user to block read accesses from a device programmer
Package choices include a 68-pin PLCC and CLDCC, and an 80-pin TQFP.
Programmable polarity Reset output (includes hysteresis), based on Reset input
Simple, menu-driven software (PSDsoft) allows configuration and design entry on a PC.
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