zpsd211r STMicroelectronics, zpsd211r Datasheet - Page 7

• Manufacturer Part Number: zpsd211r
• Description: Low Cost Field Programmable Microcontroller Peripherals
• Manufacturer: STMicroelectronics

3.0
Key Features
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PSD211R Family
Low cost programmable microcontroller peripheral
256Kb of UV EPROM with the following features:
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19 I/O pins that can be individually configured for :
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Two Programmable Arrays (PAD A and PAD B) replace your discrete PLD or decoder
and have the following features:
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Microcontroller logic that eliminates the need for external “glue logic” has the following
features:
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Programmable power management with standby current as low as 1µA
(V versions only)
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Built-in security locks the device and PAD decoding configuration
Wide Operating Voltage Range
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Available in a variety of packaging (44-pin PLDCC, CLDCC, and PQFP)
Simple, menu-driven software (PSDsoft) allows configuration and design entry on a PC.
Configurable as 32 K x 8
Divided into eight equally-sized mappable blocks for optimized address mapping
As fast as 70 ns access time, which includes address decoding
Microcontroller I/O port expansion
Programmable Address decoder (PAD) I/O
Latched address output
Up to 13 Inputs and 24 outputs
36 Product terms (9 for PAD A and 27 for PAD B)
Ability to decode up to 1 MB of address
Ability to interface to multiplexed buses
Built-in address latches for multiplexed address/data bus
ALE and Reset polarity are programmable (Reset polarity not programmable
on V-versions)
Multiple configurations are possible for interface to many different microcontrollers
CMiser bit—programmable option to reduce AC power consumption in memory
Turbo Bit (ZPSD only)—programmable bit to reduce AC and DC power consumption
in the PADs
V-versions: 2.7 to 5.5 volts
Others: 4.5 to 5.5 volts