87C196LA Intel Corporation, 87C196LA Datasheet - Page 18

• Manufacturer Part Number: 87C196LA
• Description: CHMOS 16-BIT MICROCONTROLLER
• Manufacturer: Intel Corporation

18
87C196LA — AUTOMOTIVE
enabled in clock-doubler mode.
5.2 AC Characteristics
Test Conditions: Capacitive load on all pins = 100 pF, rise and fall times = 10 ns, F
F
f
t
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
NOTES:
1.
2.
3.
4.
Symbol
XTAL
XHCH
CLCL
CHCL
CLLH
LLCH
LHLH
LHLL
AVLL
LLAX
LLRL
RLCL
RLRH
RHLH
RLAZ
LLWL
CLWL
QVWH
CHWH
WLWH
WHQX
1
Testing performed at 4.0 MHz with PLL enabled. With the PLL bypassed, the device is tested only
down to 8 MHz. However, the device is static by design and will typically operate below 1 Hz.
Typical specifications, not guaranteed.
Assuming back-to-back bus cycles.
8-bit bus only.
Frequency on XTAL1, PLL in 1x mode
Frequency on XTAL1, PLL in 2x mode
Operating frequency, f = F
Operating frequency, f = 2F
Period t = 1/f
XTAL1 High to CLKOUT High or Low
CLKOUT Cycle Time
CLKOUT High Period
CLKOUT Falling to ALE Rising
ALE Falling to CLKOUT Rising
ALE Cycle Time
ALE High Period
Address Setup to ALE Low
Address Hold after ALE Low
ALE Low to RD# Low
RD# Low to CLKOUT Low
RD# Low to RD# High
RD# High to ALE Rising
RD# Low to Address Float
ALE Low to WR# Low
CLKOUT Low to WR# Falling Edge
Data Valid to WR# High
CLKOUT High to WR# Rising Edge
WR# Low to WR# High
Data Hold after WR# High
The 87C196LA will meet these specifications
Parameter
(Over Specified Operating Conditions)
XTAL
XTAL
Table 7. AC Characteristics
1
; PLL in 1x mode
1
; PLL in 2x mode
t – 10
t – 10
t – 15
t – 40
t – 30
t – 10
t – 23
t – 20
t – 25
– 10
– 20
– 10
t – 5
Min
8.0
4.0
8.0
– 5
50
20
4
t
PRODUCT PREVIEW
2t
4t
XTAL
t + 15
t + 10
t + 25
Max
20.0
20.0
10.0
125
110
15
15
30
25
15
5
1
= 8MHz with PLL
MHz
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
(2)
(3)
(1)