83C151SB Intel Corporation, 83C151SB Datasheet - Page 16

• Manufacturer Part Number: 83C151SB
• Description: HIGH-PERFORMANCE CHMOS MICROCONTROLLER
• Manufacturer: Intel Corporation

8XC151SA SB HIGH-PERFORMANCE CHMOS MICROCONTROLLER
AC Characteristics
Table 8 lists AC timing parameters for the
8XC151SA SB with no wait states External wait
states can be added by extending PSEN
WR
3 and 5 mark parameters affected by an ALE wait
NOTES
1 16 MHz
2 Specifications for PSEN
3 In the formula M
4 In the formula N
5 ‘‘Typical’’ specifications are untested and not guaranteed
16
F
T
T
T
T
T
T
T
T
Symbol
OSC
OSC
LHLL
AVLL
LLAX
RLRH
WLWH
LLRL
LHAX
and or by extending ALE In the table Notes
(2)
(2)
XTAL1 Frequency
1 F
ALE Pulse Width
Address Valid to ALE Low
Address Hold after ALE Low
RD
WR
ALE Low to RD
ALE High to Address Hold
e
e
Number of wait states (0 1 2 or 3) for RD
Number of wait states (0 or 1) for ALE
OSC
or PSEN
Pulse Width
Table 9 AC Characteristics (Capacitive Loading
are identical to those for RD
12 MHz
16 MHz
12 MHz
16 MHz
12 MHz
16 MHz
12 MHz
16 MHz
12 MHz
16 MHz
12 MHz
16 MHz
12 MHz
16 MHz
12 MHz
16 MHz
Parameter
Pulse Width
or PSEN
Low
RD
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151 6
151 6
N A
68 3
47 5
58 3
37 5
58 3
37 5
83 3
62 5
N A
Min
110
110
10
10
state and Notes 4 and 5 mark parameters affected
by a PSEN
Figures 5 – 11 show the bus cycles with the timing
parameters
Max F
PSEN
OSC
Max
N A
N A
WR
(1)
RD
e
WR
T
T
T
T
Tosc
50 pF)
OSC
OSC
OSC
OSC
(1
(1
(1
2(1
2(1
F
T
83 3
62 5
Min
a
a
a
OSC
10
OSC
0
a
a
2M)
2M)
b
2M)
b
b
b
b
wait state
N)
N)
Variable
25
15
25
15
15
Max
16
Units
MHz
(3)
(3)
(4)
(4)
(3)
ns
ns
ns
ns
ns
ns
ns
ns