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| 型号： | N8xC196MH |
| 厂商： | Intel Corp. |
| 英文描述： | 8XC196MH INDUSTRIAL MOTOR CONTROL CHMOS MICROCONTROLLER |
| 中文描述： | 8XC196MH工业电机控制CHMOS单片机 |
| 文件页数： | 23/41页 |
| 文件大小： | 292K |
| 代理商： | N8XC196MH |
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8XC196MH INDUSTRIAL MOTOR CONTROL CHMOS MICROCONTROLLER
23
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
is the time between signal R (RD#) condition H (high) and signal D (Input Data) condition Z (floating). Table
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.
Table 10. AC Timing Symbol Definitions
Signals
Conditions
A
Address
P
PROG#
H
High
B
BHE#
Q
Data Out
L
Low
D
Data In
R
RD#
V
Valid
G
BUSWIDTH
V
PVER
X
No Longer Valid
I
T1DIR/AINC#
W
WR#/WRH#/WRL#
Z
Floating
K
T1CLK
X
XTAL1
L
ALE/ADV#/PALE#
Y
READY
Table 11. AC Timing Definitions
(
1
)
Symbol
Parameter
Min
Max
Units
Notes
F
OSC
T
OSC
Frequency on XTAL1
8
16
MHz
4
1/F
OSC
62.5
125
ns
The External Memory System Must Meet These Specifications
T
AVYV
T
LLYV
T
YLYH
T
LLYX
T
AVGV
T
LLGV
NOTES:
1.
2.
3.
4.
Address Valid to READY Setup
2T
OSC
– 75
T
OSC
– 70
ns
ALE/ADV# Low to READY Setup
ns
Non READY Time
No Upper Limit
ns
READY Hold after ALE/ADV# Low
T
OSC
– 15
2T
OSC
– 40
2T
OSC
– 75
T
OSC
– 60
ns
2
Address Valid to BUSWIDTH Setup
ns
ALE/ADV# Low to BUSWIDTH Setup
ns
Test Conditions: Capacitive load on all pins = 100 pF, rise and fall times = 10 ns, F
OSC
= 16 MHz.
Exceeding the maximum specification causes additional wait states.
If wait states are used, add 2T
×
n where n= number of wait states.
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.
5.
6.
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