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TFT Gate Driver (258 Outputs/3 Levels)
CS5851
BLOCK DIAGRAM
GENERAL DESCRIPTION
Century Semiconductor Inc.
FEATURES
USA:
4020 Moorpark Avenue Suite 115
San Jose, CA, 95117
Tel: 408-243-8388 Fax: 408-243-3188
Sales@century-semi.com
Sales@century-semi.com.tw
www.century-semi.com
Rev.0.1 December 2000
page 1 of 12
Century Semiconductor, Inc.
Taiwan:
No. 2, Industry East Rd. 3rd,
Science-Based Industrial Park, Hsin-Chu, Taiwan
Tel: 886-3-5784866 Fax: 886-3-5784349
CS5851 is a TFT LCD gate driver with 258
outputs for XGA/SXGA display systems. The logic
and control portion is implemented in standard
CMOS circuits while the output drivers use high
voltage CMOS design. The low voltage part includes
two 258-stage bidirectional shift registers with right
and left shift I/O for cascading. The output of the shift
register is then level translated to drive the high
voltage output buffer. There are five supply voltages
for CS5851. VDD/VLL are the supply voltages for
logic interfaces. Typically VDD is at 3.3V while VLL is
0V. CS5851 is functional even VDD is low at 2.3V.
VGON, VCP and VSS are the supply voltages for the
output driver. VSS is the most negative supply
voltage for the internal substrate of CS5851.
CS5851 allows one global output enable control
(OE) and one global enable signal (XON).
258 gate drive outputs
Bidirectional shift control and cascadable
Global output enable and global on control
Maximum shift clock frequency up to 100KHz
3.3V CMOS logic I/O
High voltage output drive
Operating supply range
Logic (VDD-VLL: 2.3V ~ 3.6V)
Output Drive (VGON-VSS: 22V ~ 40V)
TCP package
DIOL1,2
SCLK
SHIFT CONTROL REGISTER
CS5851
ENABLE CONTROL
OUTPUT BUFFER
LEVEL SHIFT
DIOR1,2
RL
OE
XON
VGON
OUT1 OUT2
OUT255 OUT256
VDD
VLL
MODE
VCP
VSS
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