Datasheet

Appendix A Electrical Characteristics
MC9S12E128 Data Sheet, Rev. 1.07
598 Freescale Semiconductor
Table A-27. Expanded Bus Timing Characteristics (3.3V Range)
Conditions are VDDX=3.3V+/-10%, Junction Temperature -40˚C to +140˚C, C
LOAD
= 50pF
Num C Rating Symbol Min Typ Max Unit
1 P Frequency of operation (E-clock) f
o
0 — 16.0 MHz
2 P Cycle time t
cyc
62.5 — — ns
3 D Pulse width, E low PW
EL
30 — — ns
4 D Pulse width, E high
1
1
Affected by clock stretch: add N x t
cyc
where N=0,1,2 or 3, depending on the number of clock stretches.
PW
EH
30 — — ns
5 D Address delay time t
AD
— — 16 ns
6 D Address valid time to E rise (PW
EL
–t
AD
)t
AV
16 — — ns
7 D Muxed address hold time t
MAH
2——ns
8 D Address hold to data valid t
AHDS
7——ns
9 D Data hold to address t
DHA
2——ns
10 D Read data setup time t
DSR
15 — — ns
11 D Read data hold time t
DHR
0——ns
12 D Write data delay time t
DDW
— — 15 ns
13 D Write data hold time t
DHW
2——ns
14 D Write data setup time
1
(PW
EH
–t
DDW
)t
DSW
15 — — ns
15 D Address access time
1
(t
cyc
–t
AD
–t
DSR
)t
ACCA
29 — — ns
16 D E high access time
1
(PW
EH
–t
DSR
)t
ACCE
15 — — ns
17 D Non-multiplexed address delay time t
NAD
— — 14 ns
18 D Non-muxed address valid to E rise (PW
EL
–t
NAD
)t
NAV
16 — — ns
19 D Non-multiplexed address hold time t
NAH
2——ns
20 D Chip select delay time t
CSD
— — 25 ns
21 D Chip select access time
1
(t
cyc
–t
CSD
–t
DSR
)t
ACCS
22.5 — — ns
22 D Chip select hold time t
CSH
2——ns
23 D Chip select negated time t
CSN
8——ns
24 D Read/write delay time t
RWD
— — 14 ns
25 D Read/write valid time to E rise (PW
EL
–t
RWD
)t
RWV
16 — — ns
26 D Read/write hold time t
RWH
2——ns
27 D Low strobe delay time t
LSD
— — 14 ns
28 D Low strobe valid time to E rise (PW
EL
–t
LSD
)t
LSV
16 — — ns
29 D Low strobe hold time t
LSH
2——ns
30 D NOACC strobe delay time t
NOD
— — 14 ns
31 D NOACC valid time to E rise (PW
EL
–t
NOD
)t
NOV
16 — — ns
32 D NOACC hold time t
NOH
2——ns
33 D IPIPO[1:0] delay time t
P0D
2 — 14 ns
34 D IPIPO[1:0] valid time to E rise (PW
EL
–t
P0D
)t
P0V
16 — — ns
35 D IPIPO[1:0] delay time
1
(PW
EH
-t
P1V
)t
P1D
2—25ns
36 D IPIPO[1:0] valid time to E fall t
P1V
11 — — ns