C80C251SQ16 데이터 시트보기 (PDF) - Intel

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C80C251SQ16

HIGH-PERFORMANCE CHMOS MICROCONTROLLER

Intel 

8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER

WCLK

ALE

WR#

WAIT#

State 1

State 2

State 3

State 4

TWLYX max

TWLYX min

TWLYV

TCLYV

TCLYX min

TCLYX max

WR# stretched

P2

A8-A15

D0-D7

stretched

P0

A0-A7

stretched

A5003-01

Symbol

TCLYV

TCLYX

TRLYV

TRLYX

TWLYV

TWLYX

Figure 16. External Bus Cycle: Data Write (Page Mode)

Table 13. Real-time Wait AC Timing

Parameter

Min

Wait Clock Low to Wait Set-up

0

Wait Hold after Wait Clock Low

PSEN#/RD# Low to Wait Set-up

(2W)TOSC + 5

0

Wait Hold after PSEN#/RD# Low

WR# Low to Wait Set-up

(2W)TOSC + 5

0

Wait Hold after WR# Low

(2W)TOSC + 5

Max

TOSC – 20

(1+2W)TOSC – 20

TOSC – 20

(1+2W)TOSC – 20

TOSC – 20

(1+2W)TOSC – 20

Units

ns

ns

ns

ns

ns

ns

30

PRELIMINARY

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