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SC26C562

CMOS dual universal serial communications controller (CDUSCC)

Philips Electronics 

Philips Semiconductors

CMOS dual universal serial communications controller

(CDUSCC)

Product specification

SC26C562

AC ELECTRICAL CHARACTERISTICS (Continued)

IRQN

IACKN

D7–D0

INTERRUPT REQUEST LOCKED

VECTOR SETTLING

tIALDDV

VECTOR

LOCKED

C

B

tIAHDDI

A

A

A

C

tIAHDDF

NOTES:

A ICR[5:4] = 01 or 10 (mode 1 or mode 2)

B Call instruction (mode 2)

C ICR[5:4] = 11 (mode 3)

Figure 6. Interrupt Acknowledge Cycle

SERVICE

ROUTINE

Cleared

through

software

SD00208

SYMBOL

PARAMETER

tIALDDV

tIAHDDF

tIAHDDI

tIALDLZ

tIAHIAL

IACKN low to data bus valid

IACKN high to data bus floating

IACKN high to data bus invalid

IACKN low to data bus low impedance9

IACKN high to low

LIMITS

INDUSTRIAL SC26C562 COMMERCIAL SC26C562

Min

Max

Min

Max

140

130

5

60

5

60

5

10

40

30

UNIT

ns

ns

ns

ns

ns

CEN

WRN

GPO1_N

AND/OR

GPO2_N

OLD DATA

Figure 7. Output Port Timing

tWRHGOV

NEW DATA

SD00209

SYMBOL

PARAMETER

tWRHGOV WRN high to GPO output data valid

LIMITS

INDUSTRIAL SC26C562 COMMERCIAL SC26C562

Min

Max

Min

Max

100

100

UNIT

ns

1998 Sep 04

11

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