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7820

Microprocessor-compatible 8-Bit ADC

MAXWELL TECHNOLOGIES 

Microprocessor-compatible 8-Bit ADC

7820

TABLE 4. 7820 AC ELECTRICAL CHARACTERISTICS1

(VDD = +5V; VREF(+) = +5V; VREF(-) = GND = 0V, UNLESS OTHERWISE SPECIFIED) (RD MODE (PIN 7 = 0V))

(TA = -55 TO 125 ° C UNLESS OTHERWISE SPECIFIED)

PARAMETER

SUBGROUPS

SYMBOL

MIN

MAX

UNIT

CS to RD/WR Setup Time

CS to RD/WR Hold Time

CS to Delay Time (Pull-up Resistor = 5kΩ

Conversion Time (RD Mode)

Data Access Time (RD Mode)

RD to INT Delay (RD Mode)

Data Hold Time

Delay Time Between Conversions

Write Pulse Width

9, 10, 11

9, 10, 11

9, 10, 11

9, 10, 11

9, 10, 11

9, 10, 11

9, 10, 11

9, 10, 11

9, 10, 11

tCSS

tCSH

tRDY

tCRD

tACCD

tINTH

tDH

tp

tWR

0

--

ns

0

--

ns

--

100

ns

--

2.5

µs

--

tCRD + 50

ns

--

225

ns

--

100

ns

600

--

ns

600

--

ns

--

50

µs

Delay Time Between WR and RD Pulses

9, 10, 11

tRD

700

--

ns

Data Access Time (WR-RD Mode)

9, 10, 11

tACC1

--

250

ns

RD to INT Delay

9, 10, 11

tR1

--

225

ns

WR to INT Delay

9, 10, 11

tINTL

--

1700

ns

Data Access Time (WR-RD Mode)

9, 10, 11

tACC2

--

110

ns

WR to INT Delay (Stand-Alone Operation)

9, 10, 11

tIHWR

--

150

ns

Data Access Time After INT (Stand-Alone Operation

9, 10, 11

tID

--

75

ns

1. Sample tested at 25°C to ensure compliance. Only on process design change.

09.09.03 Rev 3

All data sheets are subject to change without notice 5

©2003 Maxwell Technologies

All rights reserved.

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