參數(shù)資料
型號(hào)： STR912FW44X6T
廠商： 意法半導(dǎo)體
元件分類： ADC
英文描述： ARM966E-S 16/32-Bit Flash MCU with Ethernet, USB, CAN, AC Motor Control, 4 Timers, ADC, RTC, DMA
中文描述： ARM966E - ? 16/32位閃存微控制器與以太網(wǎng)，USB，加拿大，交流電機(jī)控制，4個(gè)計(jì)時(shí)器，模數(shù)轉(zhuǎn)換器，RTC和DMA的
文件頁數(shù)： 51/72頁
文件大?。?/td> 664K
代理商： STR912FW44X6T
STR91xF
Electrical characteristics
55/72
6.11
External memory bus timings
VDDQ = 2.7 - 3.6V, VDD = 1.65 - 2V, TA = -40 / 85 °C unless otherwise specified.
Table 16.
EMI Bus Clock Period
Notes: 1 EMI Bus clock is an internal clock only and is not available on the EMI bus pin
2 EMI_ratio =1/ 2 by default (can be programmed to be 1 by setting the proper bits in the
SCU_CLKCNTR register)
Table 17.
EMI read operation
Notes: 1 ALE_LENGTH = 1 by default (can be programmed to be 2 by setting the bits In the SCU_SCR0
register)
2 WSTRD = 1Fh by default (RD wait state time = WSTRD x tBCLK, WSTRD can be programmed
in the EMI_RCRx Register)
3 WSTOEN = 1 by default (RD assertion delay from chip select. WSTOEN can be programmed in
the EMI_OECRx Register)
Symbol
Parameter
Value
tBCLK
EMI Bus Clock period
1 /(fHCLK x EMI_ratio)
Symbol
Parameter
Value
Unit
Min
Typ
Max
tRCR
Read to CSn inactive
0
ns
tRP
Read Pulse Width
(WSTRD-WSTOEN+1)*
tBCLK
ns
tRDS
Read Data Setup Time
4
ns
tRDH
Read Data Hold Time
0
ns
tRAS
Read Address Setup Time
(WSTOEN)* tBCLK
ns
tRAH
Read Address Hold Time
0
ns
tAW
ALE pulse width
(ALE_LENGTH)* tBCLK
ns
tAAH
Address to ALE hold time
tBCLK/2
ns
tAAS
Address to ALE setup time
(ALE_LENGTH)* tBCLK
ns
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