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SDN8080G 80-outputs common/segment driver
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data sheet (v6)
2005 Sep 29
Avant Electronics
SDN8080G 80-outputs common/segment driver
1 1.1
GENERAL Description
The SDN8080G is a COMMON/SEGMEMT driver for large-panel dot-matrix STN LCD module. It can be used either as a COMMON driver or as a SEGMENT driver, by connecting its CS input to VDD or VSS. When its CS input is connected to VDD, the SDN8080G is an 80-COMMON driver. When its CS input is connected to VSS, the SDN8080G is an 80-SEGMENT driver. 1.2 Features
• Operating voltage range (VDD-VSS, control logic): 2.7 ~ 5.5 volts. • LCD bias voltage range (VDD-VEE): 6 ~ 28 volts. • 80-SEGMENT driver or 80-COMMON driver, via CS-pin selection. • When used as a SEGMENT driver, 4-bit parallel or 1-bit serial interface with a controller. • When used as a COMMON driver, two modes of operation are available: Single mode or Dual mode. www.DataSheet4U.com • Display duty cycle: 1/64 ~ 1/256. • LCD on/off control, when used as SEGMENT driver. • External 4-level LCD bias voltage. • Operating frequency range: 8 MHz, when VDD= 5 volts. • Operating temperature range: -30 to +85 °C. • Storage temperature range: -55 to +150 °C.
2005 Sep 29
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data sheet (v6)
Avant Electronics
SDN8080G 80-outputs common/segment driver
2
ORDERING INFORMATION Ordering information TYPE NUMBER DESCRIPTION LQFP100 Pb-free package. QFP100 Pb-free package. LQFP100 general package. QFP100 general package. Tested die.
Table 1
SDN8080G-LQFPG SDN8080G-QFPG SDN8080G-LQFP SDN8080G-QFP SDN8080G-D
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2005 Sep 29
3 of 40
data sheet (v6)
Avant Electronics
SDN8080G 80-outputs common/segment driver
3 3.1
FUNCTIONAL BLOCK DIAGRAM AND DESCRIPTION Functional block diagram
SC78
SC79
V0 V12 V43 V5
80-bit 4-level driver
- - - - - - - - - - High-voltage area
VEE www.DataSheet4U.com
80-bit level shifter
Output voltage level - - - - - - - - - - 80-bit data latch / bi-directional shift register for COMMON data - - - - - - - - - - 20 x 4-bit (or 80 x 1-bit) bi-directional shift register for SEGMENT data
D1_SID D2_DL D3_DM D4_DR
M DISPOFFB
LCK
SCK
CL1 CL2
Data Latch Control Clock Control Power down function
ERB VDD VSS
CS AMS
ELB
Fig.1 Functional diagram
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4 of 40
SC80
SC1
SC2
SC3
data sheet (v6)
Avant Electronics
SDN8080G 80-outputs common/segment driver
3.2
Block description Block description NAME COM/SEG COM/SEG DESCRIPTION Inputs to this block are external signals CL1, CL2, CS, and AMS. It generates latch clock (LCK) and shift clock (SCK). SCK is used to shift display data into the 20 x 4-bit bi-directional shift register for SEGMENT data. This block controls shift direction of the 20 x 4-bit shift register and selects its input data pins. In COMMON driver application, this block is disable.