7820
Microprocessor-compatible 8-Bit ADC
1
TABLE 4. 7820 AC ELECTRICAL CHARACTERISTICS
(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
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
0
0
--
--
ns
ns
ns
µs
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
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
--
100
2.5
--
--
tCRD + 50
225
100
--
--
--
Delay Time Between Conversions
Write Pulse Width
tp
600
600
--
tWR
--
50
Delay Time Between WR and RD Pulses
Data Access Time (WR-RD Mode)
RD to INT Delay
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
tRD
tACC1
tR1
700
--
--
250
225
1700
110
150
75
--
WR to INT Delay
tINTL
tACC2
tIHWR
tID
--
Data Access Time (WR-RD Mode)
WR to INT Delay (Stand-Alone Operation)
Data Access Time After INT (Stand-Alone Operation
--
--
--
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.
MAXWELL [ MAXWELL TECHNOLOGIES ]
