ZPSD311V-B-20UI View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ZPSD311V-B-20UI

Low Cost Field Programmable Microcontroller Peripherals

STMicroelectronics 

PSD3XX Family

18.9 Timing Diagrams for all PSD3XX Parts

Figure 20. Timing of 8-Bit Multiplexed Address/Data Bus Using RD, WR (PSD3X1)

READ CYCLE

WRITE CYCLE

32

32

CSI/A19

as CSI

7

15

32

Direct (1)

PAD Input

STABLE INPUT

STABLE INPUT

6

14

Multiplexed (2)

t(s) Inputs

uc A0/AD0-

d A7/AD7

Pro t(s) Active High

te c ALE

le du Active Low

so ro ALE

- Ob te P RD/E as RD

ct(s) bsole BHE/PSEN

u O as PSEN

rod ) - WR/VPP or

P t(s RW as WR

lete uc Any of

d PA0-PA7

so ro as I/O Pin

b P Any of

O te PB0-PB7

as I/O Pin

ole Any of

s PA0-PA7 Pins

b as Address

OOutputs

6

ADDRESS A

2

3

1

10

DATA VALID

9

4

13

8

12

5

18

19

INPUT

INPUT

23

ADDRESS A

14

ADDRESS B

2

3

1

11

DATA

IN

17

16

36

13

12A

20

OUTPUT

OUTPUT

23

ADDRESS B

See referenced notes on page 64.

44

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