Datasheet

Electrical characteristics STM32F20xxx
130/178 DocID15818 Rev 11
Figure 56. Asynchronous non-multiplexed SRAM/PSRAM/NOR read waveforms
1. Mode 2/B, C and D only. In Mode 1, FSMC_NADV is not used.
Table 72. Asynchronous non-multiplexed SRAM/PSRAM/NOR read timings
(1)(2)
Symbol Parameter Min Max Unit
t
w(NE)
FSMC_NE low time 2T
HCLK
– 0.5 2T
HCLK
+0.5 ns
t
v(NOE_NE)
FSMC_NEx low to FSMC_NOE low 0.5 2.5 ns
t
w(NOE)
FSMC_NOE low time 2T
HCLK
- 1 2T
HCLK
+ 0.5 ns
t
h(NE_NOE)
FSMC_NOE high to FSMC_NE high hold time 0 - ns
t
v(A_NE)
FSMC_NEx low to FSMC_A valid - 4 ns
t
h(A_NOE)
Address hold time after FSMC_NOE high 0 - ns
t
v(BL_NE)
FSMC_NEx low to FSMC_BL valid - 0.5 ns
t
h(BL_NOE)
FSMC_BL hold time after FSMC_NOE high 0 - ns
t
su(Data_NE)
Data to FSMC_NEx high setup time T
HCLK
+ 0.5 - ns
t
su(Data_NOE)
Data to FSMC_NOEx high setup time T
HCLK
+ 2.5 - ns
t
h(Data_NOE)
Data hold time after FSMC_NOE high 0 - ns
t
h(Data_NE)
Data hold time after FSMC_NEx high 0 - ns
t
v(NADV_NE)
FSMC_NEx low to FSMC_NADV low - 2.5 ns
t
w(NADV
) FSMC_NADV low time - T
HCLK
– 0.5 ns
Data
FSMC_NE
FSMC_NBL[1:0]
FSMC_D[15:0]
t
v(BL_NE)
t
h(Data_NE)
FSMC_NOE
Address
FSMC_A[25:0]
t
v(A_NE)
FSMC_NWE
t
su(Data_NE)
t
w(NE)
ai14991c
w(NOE)
tt
v(NOE_NE)
t
h(NE_NOE)
t
h(Data_NOE)
t
h(A_NOE)
t
h(BL_NOE)
t
su(Data_NOE)
FSMC_NADV
(1)
t
v(NADV_NE)
t
w(NADV)