HD66766R Datasheet, PDF (11/97 Pages) Hitachi Semiconductor – 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors

HD66766R
Rev. 1.0-1 / September 2002
Table 4 cont.
Number of
Signals
Pins
I/O
DB2-DB15 14
I/O
SEG1–
396
O
SEG396
COM1– 176
O
COM176
VCH, VCL 2
—
VM
1
—
VSH
1
—
VciOUT 1
—
Vci1
1
—
Vci2
1
—
VOUT
1
—
C11+, C11- 2
—
Connected to Functions
MPU
Serves as a 16-bit bi-directional data bus.
For an 8-bit bus interface, data transfer uses DB15-DB8; fix
unused DB7-DB0 to the Vcc or GND level.
For a synchronous clock interface or unused pins, fixed to
the Vcc or GND level.
LCD
Output signals for segment drive. In the display-off period
(D1–0 = 00, 01) or standby mode (STB = 1), all pins output
GND level.
The SGS bit can change the shift direction of the segment
signal. For example, if SGS = 0, RAM address 0000 is
output from SEG1. If SGS = 1, it is output from SEG396.
SEG1, SEG4, SEG7, ... display red (R), SEG2, SEG5,
SEG8, ... display green (G), and SEG3, SEG6, SEG9, ...
display blue (B) (SGS = 0).
LCD
Output signals for common drive. In the display-off period
(D1–0 = 00, 01) sleep mode (SLP = 1) or standby mode
(STB = 1), all pins output GND level.
The CMS bit can change the shift direction of the common
signal. For example, if CMS = 0, driver outputs from
COM1 to COM176. If CMS = 1, driver outputs COM176 to
COM1.
Note that start position of the common driver output is
changed by screen diving position function.
Capacitor for Selection level for the common signal. When internal power
stabilization, supply is used, connect the capacitors for stabilization to
shot key barrier VCH AND VCL, and shot key barrier diode to VCL.
diode or external When internal power supply is not used, supply external
power supply voltage.
Capacitor for Non-selection level for the common signal. When internal
stabilization or operational amplifier is used, it is output of the internal
external power operational amplifier and connect the capacitors for
supply
stabilization. When internal operational amplifier is not
used, supply external voltage.
Capacitor for Selection level for the segment signal. When internal
stabilization or operational amplifier is used, it is output of the internal
external power operational amplifier and connect the capacitors for
supply
stabilization. When internal operational amplifier is not
used, supply external voltage.
Vci1 and
Outputs a regulated voltage derived from Vcc. Connect a
capacitor for capacitor for stabilization. When this pin is not used,
stabilization or leave it open.
open
VciOUT or power
supply
Capacitor for
stabilization or
open
Step-up
capacitance
Step-up
capacitance
Voltage-input pin for step-up circuit 1. When the Vci
adjuster is used, input the power supply from VciOUT.
When not used, input the external power supply.
Connect capacitor for stabilization. When the internal
power supply circuit is not used, leave this pin open.
A voltage that doubles or triples the voltage between
Vci1 and GND is output here. The step-up factor can
be set in an internal register.
When step-up circuit is used, connect a step-up capacitor.
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