MC9328MX21_10 Datasheet, PDF (45/100 Pages) Freescale Semiconductor, Inc – 266 MHz i.MX family of microprocessors

Specifications
Table 29. NFC Target Timing Parameters¹,²
Relationship to NFC
NFC Clock
NFC Clock
Clock Period
22.17 MHz
33.25 MHz
ID
Parameter
Symbol
(T)
T = 45 ns
T = 30 ns
Unit
Min
Max
Min
Max
Min
Max
NF1 NFCLE Setup Time
tCLS
T
–
45
–
30
–
ns
NF2 NFCLE Hold Time
tCLH
T
–
45
–
30
–
ns
NF3 NFCE Setup Time
NF4 NFCE Hold Time
tCS
T
tCH
T
–
45
–
30
–
45
–
30
–
ns
–
ns
NF5 NF_WP Pulse Width
NF6 NFALE Setup Time
NF7 NFALE Hold Time
tWP
T
tALS
T
tALH
T
–
45
–
30
–
45
–
30
–
45
–
30
–
ns
–
ns
–
ns
NF8 Data Setup Time
NF9 Data Hold Time
NF10 Write Cycle Time
NF11 NFWE Hold Time
NF12 Ready to NFRE Low
NF13 NFRE Pulse Width
NF14 READ Cycle Time
tDS
T
–
45
–
30
–
ns
tDH
T
–
45
–
30
–
ns
tWC
2T
–
90
–
60
–
ns
tWH
T
–
45
–
30
–
ns
tRR
4T
–
180
–
120
–
ns
tRP
1.5T
–
67.5
–
45
–
ns
tRC
2T
–
90
–
60
–
ns
NF15 NFRE High Hold Time
tREH
0.5T
–
22.5
–
15
–
ns
NF16 Data Setup on READ
tDSR
15
–
15
–
15
–
ns
NF17 Data Hold on READ
tDHR
0
–
0
–
0
–
ns
1. High is defined as 80% of signal value and low is defined as 20% of signal value. All timings are listed according to this NFC
clock frequency (multiples of NFC clock period) except NF16, which is not NFC clock related.
2. The read data is generated by the NAND Flash device and sampled with the internal NFC clock.
MC9328MX21 Technical Data, Rev. 3.4
Freescale Semiconductor
45