Table of Contents
Advertisement
AC Electrical Characteristics
19.2
DC Electrical Characteristics
Table 19-2 contains both maximum and minimum DC characteristics of the MC68VZ328.
Table 19-2. Maximum and Minimum DC Characteristics
Number or
Symbol
1
Full running operating current at 33 MHz
2
Standby current
V
Input high voltage
IH
V
Input low voltage
IL
V
Output high voltage (I
OH
V
Output low voltage (I
OL
I
Input low leakage current
IL
(V
= GND, no pull-up or pull-down)
IN
I
Input high leakage current
IH
(V
= V
IN
DD
I
Output high current
OH
(V
= 0.8 V
OH
I
Output low current
OL
(V
= 0.4V, V
OL
I
Output leakage current
OZ
(V
= V
out
DD
1.Standby current is measured only when the real-time clock is running.
19.3
AC Electrical Characteristics
The AC characteristics consist of output delays, input setup and hold times, and signal skew times. All
signals are specified relative to an appropriate edge of other signals. All timing specifications are specified
at an operating frequency from 0 MHz to 33 MHz with an operating supply voltage from V
V
under an operating temperature from T
DD max
19.3.1
CLKO Reference to Chip-Select Signals Timing
Figure 19-1 on page 19-3 compares the chip-select signal time referenced with the CLKO signal. Note that
WS is the number of wait states in the current memory access cycle. The signal values and units of
measure for this figure are found in Table 19-3 on page 19-3. For detailed information about the individual
signals, see Chapter 6, "Chip-Select Logic."
19-2
Characteristic
1
= 2.0 mA)
OH
= -2.5 mA)
OL
, no pull-up or pull-down)
, V
= 2.9 V)
DD
DD
= 2.9 V)
DD
, output is three-stated)
L
MC68VZ328 User's Manual
(3.0 ± 0.3) V
Minimum
Typical
—
—
0.7 V
DD
—
0.7 V
DD
—
—
—
4.0
—
—
to T
. All timing is measured at 95 pF loading.
H
Unit
Maximum
20
40
mA
35
60
—
—
—
0.4
—
—
—
0.4
—
±1
—
±1
—
—
mA
—
-4.0
mA
—
±5
to
DD min
A
V
V
V
V
A
A
A
Advertisement
Table of Contents
