80C196NU Intel Corporation, 80C196NU Datasheet - Page 30

• Manufacturer Part Number: 80C196NU
• Description: COMMERCIAL CHMOS MICROCONTROLLER
• Manufacturer: Intel Corporation

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8XC196NU COMMERCIAL CHMOS 16-BIT MICROCONTROLLER
26
T
T
T
T
T
T
T
T
T
NOTES:
1.
2.
3.
4.
5.
T
T
T
T
T
T
T
T
T
NOTES:
1.
2.
3.
Symbol
Symbol
WLWH
WHQX
WHLH
WHBX
WHAX
RHBX
RHAX
W
RHSH
AVDV
RLDV
SLDV
CHDV
RHDZ
RXDX
AVYV
CLYX
YLYH
HSH
Table 13. AC Characteristics the External Memory System Must Meet, Multiplexed Bus Mode
25 MHz is the maximum input frequency when using an external crystal oscillator; however, 50 MHz
can be applied with an external clock source.
When the phase-locked loop (PLL) circuitry is enabled, the minimum input frequency on XTAL1 is 8
MHz. The PLL cannot be run at frequencies lower than 16 MHz.
If wait states are used, add 2t
Assuming back-to-back bus cycles.
8-bit bus only.
If wait states are used, add 2t
When forcing wait states using the BUSCON register, add 2t
Exceeding the maximum specification causes additional wait states.
Table 12. AC Characteristics the 8XC196NU Will Meet, Multiplexed Bus Mode (Continued)
WR# Low Period
Data Hold after WR# Rising Edge
WR# Rising Edge to ALE Rising Edge
BHE#, INST Hold after WR# Rising Edge
AD15:8 Hold after WR# Rising Edge
BHE#, INST Hold after RD# Rising Edge
AD15:8 Hold after RD# Rising Edge
A19:16, CS# Hold after WR# Rising Edge
A19:16, CS# Hold after RD# Rising Edge
AD15:0 Valid to Input Data Valid
RD# Active to Input Data Valid
Chip Select Low to Data Valid
CLKOUT High to Input Data Valid
End of RD# to Input Data Float
Data Hold after RD# Inactive
AD15:0 Valid to READY Setup
READY Hold after CLKOUT Low
Non-READY Time
A-step
B-step
A-step
B-step
Parameter
Parameter
n , where n = number of wait states.
n , where n = number of wait states.
n.
t – 10
t – 14
t – 7
t – 4
t – 4
Min
Min
No Upper Limit
0
0
0
0
0
0
t
t
PRELIMINARY
3t – 32
4t – 32
2t – 25
2t – 38
2t – 36
t + 20
t – 22
Max
Max
t – 5
Units
ns (3)
ns (5)
ns (5)
Units
ns (1)
ns (1)
ns (1)
ns (2)
ns (3)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns