4 nand flash controller ac characteristics, Tmp92cz26a, Ac measuring condition – Toshiba H1 Series User Manual
Page 661

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
set to NDFMCR0
Example: If NDFMCR0
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
A0~A23
NDRE
NDWE
D0~D7
D0~D15
t
RP
t
REA
t
OH
Read
cycle
Data output
NDRE
NDWE
D0~D7
D0~D15
t
WP
t
DH
Write
cycle
t
DS
SPLW1:0="01"
SPHW1:0="01"
t
CYC