®
AMERICAN MICROSYSTEMS, INC
LCD4002
June, 1998 Preliminary AMI 0.6 micron CMOS
C6L Double Poly
1
LCD Display Driver
Features
• 2 back planes
• 40 Segments
• 4 Voltage level
Description
LCD Driver cell produces 4 Voltage
levels (AVSS,AVDD/3 ,2/3AVDD,AVDD)
for both the back plane and segment
drivers.
BP1
BP2
AVDD
SEG[1:20]
LVDD
RESET
CLK
S[1:40]
LVSS AVSS
LCD
DRIVER
PIN DESCRIPTION
NAME TYPE DESCRIPTION
AVDD Analog Supply Nominal 5V
AVSS Analog Supply Analog gnd
LVDD Digital Supply Nominal 5V
LVSS Digital Supply Digital gnd
RESET Digital Input Cell Reset
CLK Digital Input LCD Clock
S[1:40] Digital Input LCD Segment Select (S=1→Segment on)
BP1 Analog Output LCD Back plane 1 Output
BP2 Analog Output LCD Back plane 2 Output
SEG[1:20] Analog Output LCD Segment Outputs
AC ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITION MIN TYP MAX UNITS
AVDD Analog Supply 4.5 55.5 V
LVDD Digital Supply 4.5 55.5 V
TTemperature -40 85 C
Fs LCD Clock Rate 10 KHz
(Segment loads 50pf,100Meg)
®
AMERICAN MICROSYSTEMS, INC
LCD4002
June, 1998 Preliminary AMI 0.6 micron CMOS
C6L Double Poly
2
(Back plane loads 300pf)
