Datasheet

Electrical characteristics STM32F21xxx
146/175 DocID17050 Rev 9
Figure 70. NAND controller waveforms for common memory read access
Figure 71. NAND controller waveforms for common memory write access
Table 81. Switching characteristics for NAND Flash read cycles
(1)(2)
1. C
L
= 30 pF.
2. Based on characterization, not tested in production.
Symbol Parameter Min Max Unit
t
w(N0E)
FSMC_NOE low width 4T
HCLK
- 1 4T
HCLK
+ 2 ns
t
su(D-NOE)
FSMC_D[15-0] valid data before FSMC_NOE
high
9-ns
t
h(NOE-D
) FSMC_D[15-0] valid data after FSMC_NOE high 3 - ns
t
d(ALE-NOE)
FSMC_ALE valid before FSMC_NOE low - 3T
HCLK
ns
t
h(NOE-ALE)
FSMC_NWE high to FSMC_ALE invalid 3T
HCLK
+ 2 - ns
FSMC_NWE
FSMC_N
OE
FSMC_D[15:0]
t
w(NOE)
t
su(D-NOE)
t
h(NOE-D)
ai14912c
ALE (FSMC_A17)
CLE (FSMC_A16)
FSMC_NCEx
t
d(ALE-NOE)
t
h(NOE-ALE)
t
w(NWE)
t
h(NWE-D)
t
v(NWE-D)
ai14913c
FSMC_NWE
FSMC_N
OE
FSMC_D[15:0]
t
d(D-NWE)
ALE (FSMC_A17)
CLE (FSMC_A16)
FSMC_NCEx
t
d(ALE-NOE)
t
h(NOE-ALE)