Microprocessor-compatible 8-Bit ADC
T
ABLE
4. 7820 AC E
LECTRICAL
C
HARACTERISTICS1
(V
DD
= +5V; V
REF
(+) = +5V; V
REF
(-) = GND = 0V,
UNLESS OTHERWISE SPECIFIED
) (RD M
ODE
(P
IN
7 = 0V))
(T
A
= -55
TO
125 °C
UNLESS OTHERWISE SPECIFIED
)
P
ARAMETER
CS to RD/WR Setup Time
CS to RD/WR Hold Time
CS to Delay Time (Pull-up Resistor = 5k
Ω
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
Delay Time Between WR and RD Pulses
Data Access Time (WR-RD Mode)
RD to INT Delay
WR to INT Delay
Data Access Time (WR-RD Mode)
WR to INT Delay (Stand-Alone Operation)
Data Access Time After INT (Stand-Alone Operation
S
UBGROUPS
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
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
9, 10, 11
S
YMBOL
t
CSS
t
CSH
t
RDY
t
CRD
t
ACCD
t
INTH
t
DH
t
p
t
WR
t
RD
t
ACC1
t
R1
t
INTL
t
ACC2
t
IHWR
t
ID
M
IN
0
0
--
--
--
--
--
600
600
--
700
--
--
--
--
--
--
M
AX
--
--
100
2.5
t
CRD
+ 50
225
100
--
--
50
--
250
225
1700
110
150
75
7820
U
NIT
ns
ns
ns
µs
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
Memory
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 ]
