CD00237391 Datasheet, PDF (129/177 Pages) STMicroelectronics – ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/128+4KB RAM

STM32F20xxx
Electrical characteristics
Table 74. Synchronous multiplexed NOR/PSRAM read timings⁽¹⁾⁽²⁾
Symbol
Parameter
Min
Max
t_w(CLK)
FSMC_CLK period
2T_HCLK
-
t_d(CLKL-NExL) FSMC_CLK low to FSMC_NEx low (x=0..2)
-
0
t_d(CLKL-NExH) FSMC_CLK low to FSMC_NEx high (x= 0…2)
1
-
t_{d(CLKL-NADVL)} FSMC_CLK low to FSMC_NADV low
-
1.5
t_{d(CLKL-NADVH)} FSMC_CLK low to FSMC_NADV high
2.5
-
t_d(CLKL-AV) FSMC_CLK low to FSMC_Ax valid (x=16…25)
-
0
t_d(CLKL-AIV) FSMC_CLK low to FSMC_Ax invalid (x=16…25)
0
-
t_d(CLKH-NOEL) FSMC_CLK high to FSMC_NOE low
-
1
t_d(CLKL-NOEH) FSMC_CLK low to FSMC_NOE high
1
-
t_d(CLKL-ADV) FSMC_CLK low to FSMC_AD[15:0] valid
-
3
t_d(CLKL-ADIV) FSMC_CLK low to FSMC_AD[15:0] invalid
0
-
t_su(ADV-CLKH)
FSMC_A/D[15:0] valid data before FSMC_CLK
high
5
-
t_h(CLKH-ADV) FSMC_A/D[15:0] valid data after FSMC_CLK high
0
-
1. C_L = 30 pF.
2. Based on characterization, not tested in production.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Doc ID 15818 Rev 9
129/177