
MCF5441x ColdFire Microprocessor Data Sheet, Rev. 8
Electrical characteristics
Freescale Semiconductor
32
Figure 13. Command latch cycle timing
NF7
NFC_ALE setup time
tALS
1.5
t
NFC
—ns
NF8
NFC_ALE hold time
tALH
tNFC
—ns
NF9
Data setup time
tDS
0.5
t
NFC – 4
—
ns
NF10
Data hold time
tDH
0.5
t
NFC –10
—
ns
NF11
Write cycle time
tWC
tNFC
—ns
NF12
NFC_WE high hold time
tWH
0.5
t
NFC –1
—
ns
NF13
Ready to NFC_RE low
tRR
4.5
t
NFC
—ns
NF14
NFC_RE pulse width
tRP
0.5
t
NFC – 0.5
—
ns
NF15
Read cycle time
tRC
tNFC
—ns
NF16
NFC_RE high hold time
tREH
0.5
t
NFC –1
—
ns
NF17
Data in setup time
tDSU
6—
ns
1 50 MHz maximum frequency can only be used if the part is in EDO (enhanced data out) mode.
Table 17. NFC timing specifications (continued)
Num
Characteristic
Symbol
Min
Max
Unit
NFC_CLE
NFC_CE
NFC_WE
NFC_ALE
NFC_IO[7:0]
Command
NF2
NF3
NF4
NF6
NF5
NF9
NF8
NF7
NF10