psd311-b-90ui STMicroelectronics, psd311-b-90ui Datasheet - Page 64

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psd311-b-90ui

Manufacturer Part Number
psd311-b-90ui
Description
Low Cost Field Programmable Microcontroller Peripherals
Manufacturer
STMicroelectronics
Datasheet

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0
Figure 37. Port A as AD0–AD7 Timing (Track Mode) Using RD, WR (PSD3X1)
RD/E as RD
R/W as WR
Multiplexed
PAD Inputs
WR/V
PAD Input
PA0-PA7
A0/AD0-
A7/AD7
or ALE
See referenced notes on page 64.
Direct
PP
CSOi
ALE
(1,4)
(5,7)
(3,6)
or
2
1
23
STABLE INPUT
2
ADDRESS
ADR OUT
24
3
STABLE INPUT
READ CYCLE
4
25
DATA IN
12
DATA VALID
26
32
32
1
2
23
2
STABLE INPUT
ADDRESS
ADR OUT
STABLE INPUT
24
WRITE CYCLE
3
11
28
12A
27
WRITTEN
32
32
DATA
PSD3XX Family
DATA
OUT
29
61

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