str912fa STMicroelectronics, str912fa Datasheet - Page 60
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str912fa
Manufacturer Part Number
str912fa
Description
Arm966e-s? 16/32-bit Flash Mcu With Ethernet, Usb, Can, Ac Motor Control, 4 Timers, Adc, Rtc, Dma
Manufacturer
STMicroelectronics
Datasheet
1.STR912FA.pdf
(78 pages)
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Electrical characteristics
Notes: 1 ALE_LENGTH = 1 by default (can be programmed to be 2 by setting the bits In the SCU_SCR0
60/78
2 WSTRD = 1Fh by default (RD wait state time = WSTRD x t
3 WSTOEN = 1 by default (RD assertion delay from chip select. WSTOEN can be programmed in
register)
in the EMI_RCRx Register)
the EMI_OECRx Register)
Figure 13. Non-mux bus (8-bit) read timings
Figure 14. Mux bus (16-bit) read timings
t
t
Symbol
AAH
AAS
EMI_A D[15:0]
EMI_CSxn
EMI_CSxn
EMI_A [15:0]
EMI_D[7:0]
EMI_A [23:16]
EMI_RDn
EMI_A LE
EMI_RDn
Address to ALE hold time
Address to ALE setup time (ALE_LENGTH) x t
Parameter
tA A S
tA W
A ddress
tRA S
tRA S
t
BCLK/2
Min
A ddress
A ddress
tA A H
- 1
BCLK
- 1
BCLK
Value
, WSTRD can be programmed
tRP
tRP
t
BCLK/2
tRDS
tRDS
Data
Data
Max
tRCR
tRCR
+ 1
STR91xFA
tRA H
tRA H
tRDH
tRDH
Unit
ns
ns