an87c196kt Intel Corporation, an87c196kt Datasheet - Page 25

• Manufacturer Part Number: an87c196kt
• Description: Advanced 16-bit Chmos Microcontroller
• Manufacturer: Intel Corporation

EXTERNAL CLOCK DRIVE
EXTERNAL CLOCK DRIVE WAVEFORMS
AC TESTING INPUT OUTPUT WAVEFORMS
THERMAL CHARACTERISTICS
NOTES
1 i
rounding environmental (ambient) Measurements are tak-
en 1 ft away from case in air flow environment i
Thermal resistance between junction and package surface
(case)
2 All values of i
the environment (with or without airflow and how much air-
flow) and device power dissipation at temperature of oper-
ation Typical variations are
3 Values listed are at a maximum power dissipation of
0 50W
AC Testing inputs are driven at 3 5V for a logic ‘‘1’’ and
0 45V for a logic ‘‘0’’ Timing measurements are made
at 2 0V for a logic ‘‘1’’ and 0 8V for logic ‘‘0’’
Device and Package
AN87C196KT KS
(68-Lead PLCC)
JA
1 T
T
T
T
T
T
Symbol
XLXL
XHXX
XLXX
XLXH
XHXL
e
XLXL
Thermal resistance between junction and the sur-
JA
and i
Oscillator Frequency
Oscillator Period (T
High Time
Low Time
Rise Time
Fall Time
JC
g
2 C W
may fluctuate depending on
36 5 C W
Parameter
i
JA
270999 – 17
OSC
13 C W
i
JC
)
JC
e
0 35
0 35
FLOAT WAVEFORMS
EXPLANATION OF AC SYMBOLS
Each symbol is two pairs of letters prefixed by ‘‘T’’
for time The characters in a pair indicate a signal
and its condition respectively Symbols represent
the time between the two signal condition points
Conditions
H High
L Low
V Valid
X No Longer
Z Floating
For timing purposes a Port Pin is no longer floating
when a 150 mV change from load voltage occurs and
begins to float when a 150 mV change from the loading
V
OH
62 5
Min
Valid
c
c
4
V
T
T
OL
OSC
OSC
level occurs I
Signals
A Address
B BHE
BR BREQ
C CLKOUT
D DATA
G Buswidth
H HOLD
0 65 T
0 65 T
OL
Max
250
I
16
10
10
OH s
87C196KT 87C196KS
OSC
OSC
15 mA
HA HLDA
L ALE ADV
Q Data Out
RD RD
W WR WRH WRI
X XTAL1
Y READY
270999 – 16
270999 – 18
Units
MHz
ns
ns
ns
ns
ns
25
25