MAX7651 데이터 시트보기 (PDF) - Maxim Integrated
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MAX7651 Datasheet PDF : 36 Pages
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Flash Programmable 12-Bit Integrated
Data-Acquisition Systems
TIMING CHARACTERISTICS (continued)
(MAX7651: AVDD = VPWMV = DVDD = VREF+ = +4.5 to +5.5V, VREF- = 0, fXTAL = 12MHz. MAX7652: AVDD = VPWMV = DVDD =
+2.7V to +3.6V, VREF+ = +2.5V, VREF- = 0, ACOM = AVDD/2, fXTAL = 12MHz. TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25°C.) (Figure 3)
PARAMETER
SYMBOL
CONDITIONS
MOVX TIMING CHARACTERISTICS (Note 6)
RD Pulse Width
WR Pulse Width
tRLRH
tWLWH
tMCS = 0, Guaranteed by design
tMCS > 0, Guaranteed by design
tMCS = 0
tMCS > 0
RD Low to Valid Data In
Data Hold After RD
tRLDV
tRHDX
tMCS = 0
tMCS > 0
Data Float After RD
tRHDZ
tMCS = 0
tMCS > 0
MIN TYP MAX UNITS
2tCLCL - 20
tMCS - 20
2tCLCL - 20
tMCS - 20
0
ns
ns
2tCLCL
- 55
ns
tMCS - 55
ns
tCLCL -
10
ns
2tCLCL
- 10
ALE Low to Valid Data In
Port 0 Address to Valid
Data In
tLLDV
tMCS = 0
tMCS > 0
tAVDV1
tMCS = 0
tMCS > 0
2.5tCLCL
- 58
ns
1.5tCLCL
- 58 + tMCS
3tCLCL
- 60
ns
2tCLCL -
61 + tMCS
Port 2 Address to Valid
Data In
ALE Low to RD or WR Low
tAVDV2
tMCS = 0
tMCS > 0
tLLWL
tMCS = 0
tMCS > 0
0.5tCLCL
-5
1.5tCLCL
-5
3tCLCL
- 60
ns
2tCLCL - 64
+ tMCS
0.5tCLCL
+ 10
ns
1.5tCLCL
+ 10
Port 0 Address Valid to RD
or WR Low
tAVWL1
tMCS = 0
tMCS > 0
tCLCL
- 10
ns
2tCLCL -
10
Port 2 Address Valid to RD
or WR Low
tAVWL2
tMCS = 0
tMCS > 0
tCLCL
- 10
ns
2tCLCL -
10
6 _______________________________________________________________________________________
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