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AN87C196 Datasheet(PDF) 17 Page - Intel Corporation

Part No. AN87C196
Description  CHMOS 16-BIT MICROCONTROLLER
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Maker  INTEL [Intel Corporation]
Homepage  http://www.intel.com
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17
AUTOMOTIVE
®
PRODUCT PREVIEW
5.2
AC Characteristics (Over Specified Operating Conditions)
Test Conditions: Capacitive load on all pins = 100 pF, rise and fall times = 10 ns, F
XTAL
1 = 8MHz with PLL enabled
in clock-doubler mode.
Table 7. AC Characteristics
Symbol
Parameter
Min
Max
Units
The 87C196LB will meet these specifications
F
XTAL
1
Frequency on XTAL1, PLL in 1x mode
8.0
20.0
MHz
(1)
Frequency on XTAL1, PLL in 2x mode
4.0
10.0
f
Operating frequency, f = F
XTAL
1; PLL in 1x mode
8.0
20.0
MHz
Operating frequency, f = 2F
XTAL
1; PLL in 2x
mode
t
Period t = 1/f
50
125
ns
T
XHCH
XTAL1 High to CLKOUT High or Low
20
110
ns
(2)
T
CLCL
CLKOUT Cycle Time
2t
ns
T
CHCL
CLKOUT High Period
t – 10
t + 15
ns
T
CLLH
CLKOUT Falling to ALE Rising
– 10
15
ns
T
LLCH
ALE Falling to CLKOUT Rising
– 20
15
ns
T
LHLH
ALE Cycle Time
4t
ns
T
LHLL
ALE High Period
t – 10
t + 10
ns
T
AVLL
Address Setup to ALE Low
t – 15
ns
T
LLAX
Address Hold after ALE Low
t – 40
ns
T
LLRL
ALE Low to RD# Low
t – 30
ns
T
RLCL
RD# Low to CLKOUT Low
4
30
ns
T
RLRH
RD# Low to RD# High
t – 5
ns
T
RHLH
RD# High to ALE Rising
t
t + 25
ns
(3)
T
RLAZ
RD# Low to Address Float
5
ns
T
LLWL
ALE Low to WR# Low
t – 10
ns
T
CLWL
CLKOUT Low to WR# Falling Edge
– 5
25
ns
T
QVWH
Data Valid to WR# High
t – 23
ns
T
CHWH
CLKOUT High to WR# Rising Edge
– 10
15
ns
T
WLWH
WR# Low to WR# High
t – 20
ns
T
WHQX
Data Hold after WR# High
t – 25
ns
NOTES:
1.
Testing performed at 4.0 MHz with PLL enabled. With the PLL bypassed, the device is only tested
down to 8 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.




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