MAX7652CCB datasheet(5/36 Pages) MAXIM

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Flash Programmable 12-Bit Integrated

Data-Acquisition Systems

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TIMING CHARACTERISTICS

(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

MIN

TYP

MAX

UNITS

RST Pulse Width (High)

100 +

(64 x tCK)

µs

EXTERNAL CLOCK

Clock Frequency

fCK

MHz

Clock Period

tCLCL

Clock High Time

tCHCX

Clock Low Time

tCLCX

Clock Rise Time

tCLCH

Guaranteed by design

Clock Fall Time

tCHCL

Guaranteed by design

INSTRUCTION TIMING CHARACTERISTICS

ALE Pulse Width

tLHLL

1.5tCLCL -

Address Valid to ALE Low

tAVLL

0.5tCLCL -

Address Hold after ALE

Low

tLLAX

0.5tCLCL -

ALE Low to Valid

Instruction In

tLLIV

2.5tCLC

L - 35

ALE Low to PSEN Low

tLLPL

0.5tCLCL

- 10

PSEN Pulse Width

tPLPH

2tCLCL

- 15

PSEN Low to Valid

Instruction In

tPLIV

2tCLCL -

Input Instruction Hold

after PSEN

tPXIX

0ns

Input Instruction Float

after PSEN

tPXIZ

tCLCL -

Address to Valid Instruction

tAVIV

3tCLCL -

PSEN Low to Address Float

tPLAZ

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