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8XC196NT 数据表(PDF) 11 Page - Intel Corporation

部件名 8XC196NT
功能描述  CHMOS MICROCONTROLLER WITH 1 MBYTE LINEAR ADDRESS SPACE
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制造商  INTEL [Intel Corporation]
网页  http://www.intel.com
标志 INTEL - Intel Corporation

8XC196NT 数据表(HTML) 11 Page - Intel Corporation

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8XC196NT
BUS MODE 0 and 3AC CHARACTERISTICS (Over Specified Operating Conditions)
Test Conditions Capacitance Load on All Pins e 100 pF Rise and Fall Times e 10 ns
The 8XC196NT will meet these specifications
Symbol
Parameter
Min
Max
Units
FXTAL
Frequency on XTAL1
40
20
MHz(1)
TOSC
XTAL1 Period (1FXTAL)
50
250
ns
TXHCH
XTAL1 High to CLKOUT High or Low
a
20
110
ns
TOFD
Clock Failure to Reset Pulled Low(6)
440
m
s
TCLCL
CLKOUT Period
2 TOSC
ns
TCHCL
CLKOUT High Period
TOSC b 10
TOSC a 30
ns
TCLLH
CLKOUT Low to ALEADV High
b
10
a
15
ns
TLLCH
ALEADV Low to CLKOUT High
b
25
a
15
ns
TLHLH
ALEADV Cycle Time
4 TOSC
ns(5)
TLHLL
ALEADV High Time
TOSC b 10
TOSC a 10
ns
TAVLL
Address Valid to ALE Low
TOSC b 15
ns
TLLAX
Address Hold After ALEADV Low
TOSC b 40
ns
TLLRL
ALEADV Low to RD Low
TOSC b 40
ns
TRLCL
RD Low to CLKOUT Low
b
5
a
35
ns
TRLRH
RD Low Period
TOSC b 5ns(5)
TRHLH
RD High to ALEADV High
TOSC
TOSC a 25
ns(3)
TRLAZ
RD Low to Address Float
a
5ns
TLLWL
ALEADV Low to WR Low
TOSC b 10
ns
TCLWL
CLKOUT Low to WR Low
b
10
a
25
ns
TQVWH
Data Valid before WR High
TOSC b 23
ns
TCHWH
CLKOUT High to WR High
b
10
a
15
ns
TWLWH
WR Low Period
TOSC b 30
ns(5)
TWHQX
Data Hold after WR High
TOSC b 35
ns
TWHLH
WR High to ALEADV High
TOSC b 10
TOSC a 15
ns(3)
TWHBX
BHE INST Hold after WR High
TOSC b 10
ns
TWHAX
AD8 – 15 Hold after WR High
TOSC b 30
ns(4)
TRHBX
BHE INST Hold after RD High
TOSC b 10
ns
TRHAX
AD8 – 15 Hold after RD High
TOSC b 30
ns(4)
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
5 If wait states are used add 2 TOSC c n where n e number of wait states If mode 0 (1 automatic wait state added)
operation is selected add 2 TOSC to specification
6 TOFD is the time for the oscillator fail detect circuit (OFD) to react to a clock failure The OFD circuitry is enabled by
programming the UPROM location 0778H with the value 0004H NTNQ customer QROM codes need to equate location
2016H to the value 0CDEH if the oscillator fail detect (OFD) function is desired Intel manufacturing uses location 2016H
as a flag to determine whether or not to program the Clock Detect Enable (CDE) bit Programming the CDE bit
enables oscillator fail detection
11


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