ZPSD211RL View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ZPSD211RL

Low Cost Field Programmable Microcontroller Peripherals

STMicroelectronics 

PSD211R Family

Figure 21. Chip-select Output Timing

30

31

A19/CSI

as CSI

Direct PAD (1)

Input

INPUT STABLE

Multiplexed (2)

PAD Inputs

ALE

2

3

1

or ALE

21

22

CSOi (3, 4)

Notes for

Timing

Diagrams

1. Direct PAD input = any of the following direct PAD input lines: CSI/A19 as transparent A19,

RD/E, WR or R/W, transparent PC0–PC2, ALE in non-multiplexed modes.

2. Multiplexed inputs: any of the following inputs that are latched by the ALE (or AS):

A0/AD0–A15/AD15, CSI/A19 as ALE dependent A19, ALE dependent PC0–PC2.

3. CSOi = any of the chip-select output signals coming through Port B (CS0–CS7) or through

Port C (CS8–CS10).

4. CSOi product terms can include any of the PAD input signals shown in Figure 4, except for reset

and CSI.

38

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