CS82C54-10 View Datasheet(PDF) - Harris Semiconductor

Part Name

Description

MFG CO.

CS82C54-10

CMOS Programmable Interval Timer

Harris Semiconductor 

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Timing Waveforms

A0 - A1

CS

DATA BUS

WR

82C54

(9)

tAW

(10)

tSW

tWA (11)

VALID

(13)

tDW

tWD (14)

(12)

tWW

FIGURE 17. WRITE

A0 - A1

CS

RD

DATA BUS

tAR (1)

tRA (3)

(2)

tSR

(4)

tRR

(5)

(7)

tRD

(6)

tDF

tAD

VALID

FIGURE 18. READ

RD, WR

(8) (15)

tRV

FIGURE 19. RECOVERY

WR

CLK

GATE

OUT

MODE

COUNT

(SEE NOTE)

(17)

tPWH

(19)

tR

tWC (28)

(18)

tPWL

(16)

tCLK

tGS

(23)

(24)

tGH

tF (20)

(22)

tGL

(21)

tGW

(23)

tGS

tCL (30)

tGH (24)

tOD (25)

(27)

tWO

tODG (26)

NOTE: LAST BYTE OF COUNT BEING WRITTEN

FIGURE 20. CLOCK AND GATE

4-15

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