83C196EA Intel Corporation, 83C196EA Datasheet - Page 24

• Manufacturer Part Number: 83C196EA
• Description: CHMOS 16-BIT MICROCONTROLLER
• Manufacturer: Intel Corporation

83C196EA CHMOS 16-BIT MICROCONTROLLER — AUTOMOTIVE
20
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
NOTES:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Symbol
A
B
C
D
†
RLAZ
LLWL
QVWH
CHWH
WLWH
WHQX
WHLH
WHBX
WHAX
RHBX
RHAX
W
RHSH
AVYV
CLYX
YLYH
†
Address bus (demultiplexed mode) or address/data bus (multiplexed mode)
HSH
16 MHz is the maximum input frequency when using an external crystal oscillator; however, 40MHz
can be applied with an external clock source.
If wait states are used, add 2t
Assuming back-to-back bus cycles.
When forcing wait states using the BUSCON register, add 2t
Exceeding the maximum specification causes additional wait states.
8-bit bus only.
The first falling edge of READY is not synchronized to a CLKOUT edge; therefore, one programmed
wait state is required.
Device is static by design but has been tested only down to 20 MHz.
Assumes CLKOUT is operating in divide-by-two mode (f/2).
Address
BHE#
CLKOUT
Input Data
RD# Low to Address Float
ALE Low to WR# Low
Data Stable to WR# Rising Edge
CLKOUT High to WR# Rising Edge
WR# Low to WR# High
Data Hold after WR# High
WR# High to ALE High
BHE#, INST Hold after WR# High
AD15:8, CS x # Hold after WR# High
BHE#, INST Hold after RD# High
AD15:8, CS x # Hold after RD# High
A20:0, CS x # Hold after WR# High
A20:0, CS x # Hold after RD# High
AD15:0 Valid to READY Setup
READY Hold after CLKOUT Low
Non-READY Time
Table 7. AC Characteristics, Multiplexed Bus Mode (Continued)
L
Q
R
S
ALE
Output Data
RD#
CS x #
Table 8. AC Timing Symbol Definitions
Parameter
Signals
n , where n = number of wait states.
W
X
Y
WR#, WRH#, WRL#
XTAL1
READY
ADVANCE INFORMATION
n.
t – 12
t – 14
t – 10
t – 15
t – 15
– 10
t – 4
t – 4
t – 5
t – 5
Min
No Upper Limit
0
0
0
H
L
V
X
Z
2t – 40
2t – 40
t + 10
Max
5
5
High
Low
Valid
No Longer Valid
Floating
Conditions
(5, 7, 9)
Units
ns ( 2 )
ns (9)
ns (2)
ns (6)
ns (6)
ns (4)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns