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PSD413A2 Datasheet(PDF) 25 Page - STMicroelectronics

Part # PSD413A2
Description  Low Cost Field Programmable Microcontroller Peripherals
PDF  123 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PSD413A2 Datasheet(HTML) 25 Page - STMicroelectronics

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PSD4XX Family
22
The PSD4XX
Architecture
(cont.)
9.1.2 The PSD4XXA2 ZPLD Block
Key Features
t 2 Embedded ZPLD devices
t 24 macrocells
t Combinatorial/registered outputs
t Maximum 126 product terms
t Programmable output polarity
t User configured register clear/preset
t User configured register clock input
t 59 Inputs
t Accessible via 24 I/O pins
t Power Saving Mode
t UV-Erasable
General Description
The ZPLD block has 2 embedded PLD devices:
t DPLD
The Address Decoding PLD, generating select signals to internal I/O or memory blocks.
t GPLD
The General Purpose PLD provides 24 programmable macrocells for general
or complex logic implementation; dedicated to user application.
Figure 11 shows the architecture of the ZPLD. The PLD devices all share the same
input bus. The true or complement of the 59 input signals are fed to the programmable
AND-ARRAY. Names and source of the input signals are shown in Table 4. The PA, PB, PE
signals, depending on user configuration, can either be macrocell feedbacks or inputs from
Port A, B or E.



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