AY0438T/L Microchip Technology, AY0438T/L Datasheet - Page 5
![IC LCD DRIVER CMOS 32SEG 44PLCC](/photos/6/63/66325/150-44-plcc_sml.jpg)
AY0438T/L
Manufacturer Part Number
AY0438T/L
Description
IC LCD DRIVER CMOS 32SEG 44PLCC
Manufacturer
Microchip Technology
Specifications of AY0438T/L
Package / Case
44-PLCC
Display Type
LCD
Configuration
32 Segment
Interface
Parallel
Digits Or Characters
16 Characters
Current - Supply
25µA
Voltage - Supply
3 V ~ 8.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Number Of Segments
32
Maximum Clock Frequency
1.5 MHz
Operating Supply Voltage
3 V to 8.5 V
Maximum Power Dissipation
250 mW
Maximum Operating Temperature
+ 70 C
Maximum Supply Current
60 uA
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AY0438T/L
Manufacturer:
MICROCHIP
Quantity:
12 000
Company:
Part Number:
AY0438T/L
Manufacturer:
Microchip Technology
Quantity:
10 000
;The DP are not connected, but can be connected to seg8, 16, 24 & 32.
;For each digit, the segments are connected as:
;
;
;
;
;
;
;
;where n = 0, 1, 2 and 3 for MSD, 3rdSD, 2ndSD and LSD respectively.
;The firmware uses the values in registers:
;
;pulsed to the AY0438.
;In this example, a pushbutton connected to PORTB bit 7
;is checked periodically to see if it has been pressed. If so,
;the LCD values in locations MSD to LSD are updated.
;*************************************************************************
;
;
MSD
THRDSD
SCNDSD
LSD
count
temp
PORTB
#define CLK
#define DATAIN
#define LOAD
#define UPDATELCD PORTB,7
w
STATUS
C
RP0
OPTION
RBPU
PCL
PCLATH
;
;
;
;This DecodeValue table must reside in page 0 for this program to work
;
DecodeValue
1995 Microchip Technology Inc.
Seg A --> seg(8*n + 1)
Seg B --> seg(8*n + 2)
Seg C --> seg(8*n + 3)
Seg D --> seg(8*n + 4)
Seg E --> seg(8*n + 5)
Seg F --> seg(8*n + 6)
Seg G --> seg(8*n + 7)
MSD, THRDSD, SCNDSD and LSD
list p=16c71,f=inhx8m
equ
equ
equ
equ
equ
equ
equ
equ
equ
equ
equ
equ
equ
equ
equ
org
goto
org
addwf
retlw
retlw
retlw
retlw
retlw
retlw
0x20
0x21
0x22
0x23
0x24
0x25
0x06
PORTB,0
PORTB,1
PORTB,2
0
0x03
0
5
0x81
7
0x02
0x0A
0
start
0x10
PCL
B'00111111'
B'00000110'
B'01011011'
B'01001111'
B'01100110'
B'01101101'
;decode for 0
;decode for 1
;decode for 2
;decode for 3
;decode for 4
;decode for 5
to determine the values to be
AY0438
DS70010I-page 5