PSD934F2V-10JI Просмотр технического описания (PDF) - STMicroelectronics

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PSD934F2V-10JI

Flash PSD, 3.3V Supply, for 8-bit MCUs 2 Mbit + 256 Kbit Dual Flash Memories and 64 Kbit SRAM

STMicroelectronics 

Figure 43. Peripheral I/O WRITE Timing

ALE /AS

PSD834F2V

A/D BUS

ADDRESS

DATA OUT

tWLQV (PA)

tWHQZ (PA)

WR

tDVQV (PA)

PORT A

DATA OUT

AI02898

) Table 51. Port A Peripheral Data Mode WRITE Timing

ct(s Symbol

Parameter

Conditions

-10

-15

-20

Unit

Min Max Min Max Min Max

du tWLQV–PA

WR to Data Propagation Delay

(Note 2)

42

45

55 ns

Pro tDVQV–PA

Data to Port A Data Propagation Delay

(Note 5)

38

40

45 ns

te tWHQZ–PA WR Invalid to Port A Tri-state

(Note 2)

33

33

35 ns

le Note: 1. RD has the same timing as DS, LDS, UDS, and PSEN (in 8031 combined mode).

o 2. WR has the same timing as the E, LDS, UDS, WRL, and WRH signals.

s 3. Any input used to select Port A Data Peripheral mode.

b 4. Data is already stable on Port A.

Obsolete Product(s) - O 5. Data stable on ADIO pins to data on Port A.

83/95

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