mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 593

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

1
Freescale Semiconductor
Conditions are VDDX=3.3V+/-10%, Junction Temperature -40°C to +140°C, C
Num
Affected by clock stretch: add N x t
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
1
2
3
4
5
6
7
8
9
C
P
P
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
Frequency of operation (E-clock)
Cycle time
Pulse width, E low
Pulse width, E high
Address delay time
Address valid time to E rise (PW
Muxed address hold time
Address hold to data valid
Data hold to address
Read data setup time
Read data hold time
Write data delay time
Write data hold time
Write data setup time
Address access time
E high access time
Non-multiplexed address delay time
Non-muxed address valid to E rise (PW
Non-multiplexed address hold time
Chip select delay time
Chip select access time
Chip select hold time
Chip select negated time
Read/write delay time
Read/write valid time to E rise (PW
Read/write hold time
Low strobe delay time
Low strobe valid time to E rise (PW
Low strobe hold time
NOACC strobe delay time
NOACC valid time to E rise (PW
NOACC hold time
IPIPO[1:0] delay time
IPIPO[1:0] valid time to E rise (PW
IPIPO[1:0] delay time
IPIPO[1:0] valid time to E fall
Table A-27. Expanded Bus Timing Characteristics (3.3V Range)
cyc
1
1
(PW
1
Rating
1
1
where N=0,1,2 or 3, depending on the number of clock stretches.
(t
(PW
(PW
cyc
1
EH
(t
MC9S12E256 Data Sheet, Rev. 1.08
–t
cyc
EH
EH
–t
AD
DSR
–t
-t
–t
–t
P1V
CSD
DDW
EL
EL
DSR
)
–t
–t
EL
)
EL
–t
EL
)
NOD
AD
)
–t
DSR
–t
–t
P0D
)
RWD
LSD
EL
)
)
–t
)
)
)
NAD
)
Symbol
PW
PW
t
t
t
t
t
t
t
t
t
t
t
t
t
AHDS
t
t
t
ACCA
ACCE
t
t
t
ACCS
t
t
t
t
t
t
t
t
t
t
t
DHW
MAH
DDW
DSW
RWD
RWV
RWH
NOD
NOH
t
t
DHA
DSR
DHR
NAD
NAH
CSD
CSH
CSN
NOV
t
NAV
LSD
LSV
LSH
P0D
P0V
P1D
P1V
cyc
AD
f
AV
o
EH
EL
LOAD
= 50pF
62.5
22.5
Min
30
30
16
15
15
29
15
16
16
16
16
16
11
—
—
—
—
—
—
—
0
2
7
2
0
2
2
2
8
2
2
2
2
2
Appendix A Electrical Characteristics
Typ
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Max
16.0
16
15
14
25
14
14
14
14
25
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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