Micro Controller User's Manual

TMP92CZ26A
92CZ26A-658
4.3.4 NAND Flash Controller AC Characteristics
Variable
No. Symbol Parameter
Min Max
80 MHz
(n=3)
(m=3)
60 MHz
(n=3)
(m=3)
Unit
1
t
NC
Access cycle (2 + n + m ) T 100 132
2
t
RP
NDRE
low level width
(1.5
+ n) T − 12 45 63
3
t
REA
NDRE data access time
(1.5
+ n) T − 15 41 60
4
t
OH
Read data hold time 0 0 0
5
t
WP
NDWE low level width
(1.0
+ n) T − 20 30 47
6
t
DS
Write data setup time (1.0
+ n) T − 20 30 47
7
t
DH
Write data hold time (0.5 + m) T
− 2 42 56
ns
AC measuring condition
Note1: The “n” in “Variable” means wait-number which is set to NDFMCR0<SPLW1:0>, and “m” means number which is
set to NDFMCR0<SPHW1:0>.
Example: If NDFMCR0<SPLW1:0> is set to “01”, n=1, t
RP
= (1.5 + n) T − 12 = 2.5T − 12
Note2: In above variable, the setting that result is minus can not use.
Data input
SDCLK
A
0~A23
NDRE
NDWE
D0~D7
D0~D15
t
RP
t
RE
A
t
OH
Read
c
y
cle
Data output
NDRE
NDWE
D0~D7
D0~D15
t
WP
t
DH
Write
c
y
cle
t
DS
SPLW1:0="01"
SPHW1:0="01"
t
CYC