MAX1492CNI+ Maxim Integrated Products, MAX1492CNI+ Datasheet - Page 24

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MAX1492CNI+

Manufacturer Part Number
MAX1492CNI+
Description
IC ADC W/LCD DRIVER 28-DIP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1492CNI+

Display Type
LCD
Configuration
7 Segment + 2 Annunciators
Interface
Serial
Digits Or Characters
A/D 3.5 Digits
Current - Supply
960µA
Voltage - Supply
2.7 V ~ 5.25 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Default values: 8300h (for MAX1492, -2000)
The underrange data register is 16-bit read/write regis-
ter (D15 is the MSB). When the conversion result falls
below the value in the underrange register, the UNDR
bit in the status register sets to 1. The LCD shows a -1
Default values: 0000h
The LCD segment-display register 1 is a 16-bit
read/write register. When the SEG_SEL bit (in the con-
trol register) is set to 1, the MAX1492/MAX1494 provide
direct access to individual LCD segments. The bits in
3.5- and 4.5-Digit, Single-Chip ADCs
with LCD Drivers
Default values: 7CF0h (for MAX1492, +1999)
The overrange register is a 16-bit read/write register
(D15 is the MSB). When the conversion result exceeds
the value in the overrange register, the OVER bit in the
status register latches to 1. The LCD shows a 1 fol-
Table 6. LCD Priority Table
X = Don’t care.
Overrange Register (Read/Write):
Underrange Register (Read/Write):
LCD Segment-Display Register 1 (Read/Write):
24
MSB
MSB
MSB
D15
D15
A2
______________________________________________________________________________________
SEG_SEL
D14
D14
1
0
0
0
0
G2
4E1Fh (for MAX1494, +19,999)
B1E0h (for MAX1494, -20,000)
D13
D13
D2
D12
D12
F2
SPI/ADC
X
1
0
0
0
D11
D11
E2
DP2
D10
D10
HOLD
ANN
X
X
1
0
0
D9
D9
D8
D8
B1
lowed by 4 dashes for the MAX1494 or a 1 followed by
3 dashes for the MAX1492 (Table 4).
The data is represented in two’s complement format.
followed by 4 dashes for the MAX1494 or a -1 followed
by 3 dashes for the MAX1492 (Table 4).
The data is represented in two’s complement format.
the LCD segment-display register determine if a seg-
ment is on or off. Write a 0 to this register to turn on a
segment and a 1 to turn off a segment.
D7
D7
C1
PEAK
X
X
X
1
0
D6
D6
A1
LCD Segment Registers
LCD Display Register (User Written)
LCD Display Register
Peak Register
ADC Result Register
G1
D5
D5
D1
DISPLAYS VALUES FROM
D4
D4
D3
D3
F1
D2
D2
E1
DP1
D1
D1
LSB
LSB
LSB
D0
D0
0

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