mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 401

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC912DG128 — Rev 3.0
MOTOROLA
Num
1. All timings are calculated for normal port drives.
2. Crystal input is required to be within 45% to 55% duty.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1
2
3
5
7
8
9
Frequency of operation (E-clock frequency)
Cycle timet
Pulse width, E lowPW
Pulse width, E high
Address delay timet
Address valid time to ECLK riset
Multiplexed address hold timet
Address Hold to Data Valid
Data Hold to High Zt
Read data setup time
Read data hold time
Write data delay time
Write data hold time
Write data setup time
Read/write delay timet
Read/write valid time to E riset
Read/write hold time
Low strobe
Low strobe
Low strobe
Address access time
Access time from E rise
DBE delay from ECLK rise
DBE valid timet
DBE hold time from ECLK fall
(6)
(6)
(6)
cyc
V
DD
delay timet
valid time to E riset
hold time
DBE
1 f
Characteristic
Table 19-14. Multiplexed Expansion Bus Timing
5.0 Vdc
o
(5)
AD
DHZ
(5)
(5)
PW
PW
EL
RWD
t
Freescale Semiconductor, Inc.
t
ACCA
(5)
DSW
t
LSD
EH
EH
cyc
t
For More Information On This Product,
ACCE
t
(5)
t
cyc
AD
10%, V
4
t
t
DBED
cyc
t
t
MAH
RWV
2
cyc
t
DBED
PW
t
(1), (2), (3), (4)
cyc
cyc
AV
20
delay
4
LSV
2
PW
delay
EH
4
Go to: www.freescale.com
SS
delay
t
t
Electrical Specifications
t
PW
PW
AD
delay
cyc
cyc
EH
delay
PW
t
DDW
EL
EL
0 Vdc, T
4
4
EL
t
t
DSR
DSR
delay
delay
t
t
AD
RWD
t
LSD
A
T
L
to T
H
, unless otherwise noted
Delay
27
18
18
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
18
8
4
2
Symbol
PW
PW
t
t
t
t
t
t
t
t
t
t
t
t
AHDS
t
t
t
ACCA
ACCE
DBED
t
DBEH
t
t
t
DDW
DHW
DSW
RWD
RWV
RWH
t
MAH
DHR
t
DHZ
DSR
DBE
t
LSD
LSV
LSH
cyc
AD
f
AV
o
EH
EL
Electrical Specifications
0.004
0.125
Min
58
60
13
20
25
10
20
13
20
20
21
–3
0
9
9
8 MHz
Technical Data
Tables of Data
Max
250
8.0
58
38
47
49
49
42
35
39
10
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
401
s