87C196KT87C196KS

Test Conditions Capacitance Load on All Pins e 100 pF Rise and Fall Times e 10 ns

The 87C196KT will meet these specifications

Symbol

Parameter

Min

Max

Units

Frequency on XTAL1

80

160

625

125

ns

XTAL1 High to CLKOUT High or Low

a

20

110

ns

CLKOUT Period

ns

CLKOUT High Period

ns

CLKOUT HIGH to ALEADV High

ns

CLKOUT LOW to ALEADV Low

ns

ALEADV Cycle Time

ALEADV High Time

ns

Address Valid to ALE Low

ns

Address Hold After ALEADV Low

ns

ALEADV Low to RD Low

ns

RD Low to CLKOUT Low

ns

RD Low Period

RD High to ALEADV High

RD Low to Address Float

a

5ns

ALEADV Low to WR Low

ns

CLKOUT Low to WR Low

ns

Data Valid before WR High

ns

CLKOUT High to WR High

b

10

a

15

ns

WR Low Period

Data Hold after WR High

ns

WR High to ALEADV High

BHE Hold after WR High

ns

INST Hold after WR High

AD8 – 15 Hold after WR High

BHE Hold after RD High

ns

AD8 – 15 Hold after RD High

AD8 – 15 Hold after RD High

NOTES

1 Testing performed at 80 MHz however the device is static by design and will typically operate below 1 Hz

2 Typical specifications not guaranteed

3 Assuming back-to-back bus cycles

4 8-bit bus only

14

14