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UPSD325X データシート(PDF) 135 Page - STMicroelectronics

部品番号 UPSD325X
部品情報  Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM
PDF  176 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD325X データシート(HTML) 135 Page - STMicroelectronics

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µPSD325X DEVICES
External Chip Select
The CPLD also provides two External Chip Select
(ECS1-ECS2) outputs on Port D pins that can be
used to select external devices. Each External
Chip Select (ECS1-ECS2) consists of one product
term that can be configured active High or Low.
The output enable of the pin is controlled by either
the output enable product term or the Direction
Register. (See Figure 68.)
Figure 68. Port D External Chip Select Signals
POLARITY
BIT
PD2 PIN
PT2
ECS2
DIRECTION
REGISTER
ENABLE (.OE)
POLARITY
BIT
PD1 PIN
PT1
ECS1
ENABLE (.OE)
DIRECTION
REGISTER
AI06607



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