Copyright Cirrus Logic, Inc. 2011 (All Rights Reserved) DS506F2 EP7311 High-Performance, Low-Power S" />
參數(shù)資料
型號: EP7311-CB
廠商: Cirrus Logic Inc
文件頁數(shù): 15/42頁
文件大?。?/td> 0K
描述: IC ARM720T MCU 74MHZ 256-PBGA
標(biāo)準(zhǔn)包裝: 90
系列: EP7
核心處理器: ARM7
芯體尺寸: 32-位
速度: 74MHz
連通性: 編解碼器,EBI/EMI,IrDA,鍵盤,多媒體編解碼器,SPI/Microwire1,UART/USART
外圍設(shè)備: LCD,LED,MaverickKey,PWM
輸入/輸出數(shù): 27
程序存儲器類型: ROMless
RAM 容量: 56K x 8
電壓 - 電源 (Vcc/Vdd): 2.3 V ~ 2.7 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 256-BGA
包裝: 托盤
其它名稱: 598-1220
22
Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved)
DS506F2
EP7311
High-Performance, Low-Power System on Chip
Static Memory Single Read Cycle
Note:
1. The cycle time can be extended by integer multiples of the clock period (22 ns at 45 MHz, 27 ns at 36 MHz, 54 ns at
18.432 MHz, and 77 ns at 13 MHz), by either driving EXPRDY low and/or by programming a number of wait states. EXPRDY is
sampled on the falling edge of EXPCLK before the data transfer. If low at this point, the transfer is delayed by one clock period
where EXPRDY is sampled again. EXPCLK need not be referenced when driving EXPRDY, but is shown for clarity.
2. Address, Halfword, Word, and Write hold state until next cycle.
EXPCLK
nCS
A
nMWE
HALF-
WORD
D
WRITE
nMOE
t
CSd
t
Ad
t
CSh
t
MOEh
t
Dh
t
Ds
t
HWd
t
WDd
t
WRd
t
MOEd
EXPRDY
t
EXh
t
EXs
Figure 7. Static Memory Single Read Cycle Timing Measurement
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