80C196MD INTEL [Intel Corporation], 80C196MD Datasheet - Page 23

• Manufacturer Part Number: 80C196MD
• Description: 8XC196MH INDUSTRIAL MOTOR CONTROL CHMOS MICROCONTROLLER
• Manufacturer: INTEL [Intel Corporation]

EXPLANATION OF AC SYMBOLS
Each symbol consists of two pairs of letters prefixed by “T” (for time). The characters in a pair indicate a signal
and its condition, respectively. Symbols represent the time between the two signal/condition points. For example,
T
10 defines the signal and condition codes.
AC CHARACTERISTICS (OVER SPECIFIED OPERATION CONDITIONS)
Table 11 defines the AC timing specifications that the external memory system must meet and those that the
8XC196MH will provide.
T
T
T
T
T
T
2.
3.
F
T
NOTES:
1.
4.
5.
6.
RHDZ
Symbol
OSC
OSC
AVYV
LLYV
YLYH
LLYX
AVGV
LLGV
is the time between signal R (RD#) condition H (high) and signal D (Input Data) condition Z (floating). Table
Test Conditions: Capacitive load on all pins = 100 pF, rise and fall times = 10 ns, F
Exceeding the maximum specification causes additional wait states.
If wait states are used, add 2T
Testing is performed down to 8 MHz, although the device is static by design and will typically operate
below 1 Hz.
Assuming back-to-back bus cycles.
8-bit bus only.
®
Frequency on XTAL1
1/F
Address Valid to READY Setup
ALE/ADV# Low to READY Setup
Non READY Time
READY Hold after ALE/ADV# Low
Address Valid to BUSWIDTH Setup
ALE/ADV# Low to BUSWIDTH Setup
A
B
D
G
I
K
L
OSC
The External Memory System Must Meet These Specifications
Address
BHE#
Data In
BUSWIDTH
T1DIR/AINC#
T1CLK
ALE/ADV#/PALE#
Parameter
8XC196MH INDUSTRIAL MOTOR CONTROL CHMOS MICROCONTROLLER
Table 10. AC Timing Symbol Definitions
OSC
Table 11. AC Timing Definitions (1)
Signals
n , where n = number of wait states.
P
Q
R
V
W
X
Y
PROG#
Data Out
RD#
PVER
WR#/WRH#/WRL#
XTAL1
READY
T
OSC
62.5
Min
8
– 15
No Upper Limit
H
L
V
X
Z
Conditions
2T
2T
2T
High
Low
Valid
No Longer Valid
Floating
T
T
OSC
OSC
OSC
OSC
OSC
Max
125
16
– 70
– 60
– 75
– 40
– 75
OSC
= 16 MHz.
Units
MHz
ns
ns
ns
ns
ns
ns
ns
Notes
4
2
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