参数资料
型号: AD6620ASZ-REEL
厂商: Analog Devices Inc
文件页数: 2/44页
文件大小: 0K
描述: IC DGTL RCVR DUAL 67MSPS 80-PQFP
标准包装: 500
接口: 并行/串行
电源电压: 3 V ~ 3.6 V
封装/外壳: 80-BQFP
供应商设备封装: 80-PQFP(14x14)
包装: 带卷 (TR)
安装类型: 表面贴装
AD6620
–10–
REV. A
MICROPORT MODE1, READ
Timing is synchronous to CLK; MODE = 1.
DATA VALID
tSC
ADDRESS VALID
N
N+1
N+2
N+3
CLK1
R/W2
DS2
CS3
D[7:0]
DTACK
A[2:0]
tSAM
N+4
N
tHC
tDD
tHC
tZD
tHA
tDTACK
NOTES:
1 DTACK IS DRIVEN LOW ON THE RISING EDGE OF CLK "N+3" FOR INTERNAL ACCESS (A[2:0] = 000),
CLK "N=2" OTHERWISE.
2 THE SIGNAL, R/W MAY REMAIN HIGH AND DS MAY REMAIN LOW TO CONTINUE READ MODE.
3 CS MUST RETURN TO HIGH STATE AND BE SAMPLED BY CLK (N+4 SHOWN) TO COMPLETE ACCESS
AND FORCE
DTACK HIGH.
tSC
tZR
Figure 19. MODE1 Read Timing Requirements and Switching Characteristics
MICROPORT MODE1, WRITE
Timing is synchronous to CLK; MODE = 1.
tSC
N
N+1
N+2
N+3
tSAM
N*
tDTACK
tSC
CLK1
R/W2
DS2
CS3
D[7:0]
DTACK
A[2:0]
tHC
tDTACK
tSAM
tHM
tHA
NOTES:
1 ON RISING EDGE OF "N+3" CLK, DTACK IS DRIVEN LOW.
2 THESE SIGNALS (R/W AND DS) MAY REMAIN IN LOW STATE TO CONTINUE WRITING DATA.
3 CS MUST RETURN TO HIGH STATE AND BE SAMPLED BY CLK (N+3 SHOWN) TO COMPLETE WRITE
AND FORCE
DTACK HIGH.
* THE NEXT WRITE MAY BE INITIATED ON CLK, N*.
DATA VALID
ADDRESS VALID
Figure 20. MODE1 Write Timing Requirements and Switching Characteristics
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