PSD4235G2 datasheet(76/89 Pages) STMICROELECTRONICS

Il numero della parte	PSD4235G2

Spiegazioni elettronici	Flash In-System Programmable ISP Peripherals For 16-bit MCUs 5V Supply

PDF	89 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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PSD4235G2

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Table 65. Read Timing

Note: 1. RD timing has the same timing as DS, LDS, UDS, and PSEN signals.

2. RD and PSEN have the same timing.

3. Any input used to select an internal PSD function.

4. In multiplexed mode, latched addresses generated from ADIO delay to address output on any Port.

5. RD timing has the same timing as DS, LDS, and UDS signals.

Symbol

Parameter

Conditions

-70

-90

Turbo

Off

Unit

Min

Max

Min

Max

tLVLX

ALE or AS Pulse Width

tAVLX

Address Setup Time

(Note 3)

tLXAX

Address Hold Time

(Note 3)

tAVQV

Address Valid to Data Valid

(Note 3)

+ 12

tSLQV

CS Valid to Data Valid

100

tRLQV

RD to Data Valid 8-Bit Bus

(Note 5)

RD or PSEN to Data Valid

8-Bit Bus, 8031, 80251

(Note 2)

tRHQX

RD Data Hold Time

(Note 1)

tRLRH

RD Pulse Width

(Note 1)

tRHQZ

RD to Data High-Z

(Note 1)

tEHEL

E Pulse Width

tTHEH

R/W Setup Time to Enable

tELTL

R/W Hold Time After Enable

tAVPV

Address Input Valid to

Address Output Delay

(Note 4)

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