参数资料
型号: STR912FAZ42H6T
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 96 MHz, RISC MICROCONTROLLER, PBGA144
封装: 10 X 10 MM, 1.70 MM HEIGHT, ROHS COMPLIANT, LFBGA-144
文件页数: 73/100页
文件大小: 1801K
代理商: STR912FAZ42H6T
Electrical characteristics
STR91xFAxxx
7.11
External memory bus timings
VDDQ = 2.7 - 3.6V, VDD = 1.65 - 2V, TA = -40 / 85 °C, CL= 30 pF unless otherwise specified.
7.11.1
Asynchronous mode
Non Mux Write
Figure 18.
Non-mux write timings
Table 32.
EMI bus clock period
Symbol
Parameter(1)
1.
The internal EMI Bus clock signal is available externally only on LFBGA144 packages (ball M8), and not
available on LQFP packages.
Value (2)
2.
EMI_ratio =1/ 2 by default (can be programmed to be 1 by setting the proper bits in the SCU_CLKCNTR
register)
tBCLK
EMI bus clock period
1 /(fHCLK x EMI_ratio)
tWCR
tWP
Address
Data
tWAS
tWDS
EMI_CSxn
EMI_A[15:0]
EMI_D[7:0]
EMI_BWR_WRLn
Table 33.
EMI non-mux write operation
Symbol
Parameter
Value
Min
Max
tWCR
WRn to CSn
inactive
(tBCLK/2) - 2 ns
(tBCLK/2) + 2 ns
tWAS
Write address setup
time
((WSTWEN + 1/2) x tBCLK ) - 2 ns
((WSTWEN + 1/2) x tBCLK) + 1 ns
tWDS
Write data setup
time
((WSTWEN + 1/2) x tBCLK ) - 5 ns
((WSTWEN + 1/2) x tBCLK)
tWP
Write pulse width
(WSTWR-WSTWEN + 1) x tBCLK - 1 ns (WSTWR-WSTWEN + 1) x tBCLK + 1.5 ns
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