hd66789 Renesas Electronics Corporation., hd66789 Datasheet - Page 69

• Manufacturer Part Number: hd66789
• Description: 528-channel, One-chip Driver For Amorphous Tft Panels With 262,144-color Display Ram, Power Supply Circuit, And Gate Circuit
• Manufacturer: Renesas Electronics Corporation.

HD66789
Reset Function
The HD66789 makes internal initialization with RESET input. During RESET, the HD66789 is in a busy
state, and no instruction from the MPU and access to GRAM are accepted. The time required for the
RESET input is at least 1ms. In case of power-on reset, wait at least 10ms after the power is turned on until
the R-C oscillation frequency becomes stabilized. While waiting, do not make an initial setting for the
instruction set or an access to GRAM.
Initial State of Instructions
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m. Power control 3 (PON = “0”, VRH3-0 = “00000”)
n.
o.
p.
q.
r.
s.
t.
u.
v.
w. Vertical RAM address position (VEA7-0 = “10101111”, VSA7-0 = “00000000”)
Rev.0.12, May 09 2003, page 69 of 156
VSPL = “0”, GS = “0”, SM = “0”)
LG2–0 = “000” : Replace mode, BGR = “0”, TRI = “0”, DFM1-0 = “00”)
DTE = “0”, CL = “0” : 65,536-color mode, REV = “0”, D1-0 = “00” : Display OFF, GON = 0)
DIV1-0 = “00”: clock/1, RTN3-0 = “0000” : 16 clocks in 1H period)
DM1-0 = “00” : internal clock operation, RM = “0” : System interface)
DK = “1” : DCDC1 off, SLP = “0”, STB = “0” : Standby mode off)
(PKP02-00 = “000”, PKP12-10 = “000”, PKP22-20 = “000”, PKP32-30 = “000”,
(PKN02-00 = “000”, PKN12-10 = “000”, PKN22-20 = “000”, PKN32-30 = “000”,
(VRP14-10 = “00000”, VRP03-00 = “0000”, VRN14-10 = “00000”, VRN12-10 = “000”)
Start oscillation
Driver output control (NL4–0 = “11101”, SS = “0”, SM = “0”, EPL = “0”, DPL = “0”, HSPL = “0”,
Liquid crystal AC drive control (FLD1-0 = “01”, B/C = “0”, EOR = “0”, NW5–0 = “00000”)
Entry mode set (HWM = “0”, I/D1-0 = “11”: Increment by 1, AM = “0” : Horizontal direction,
Compare register (CP17–0 : “00 0000 0000 0000 0000”)
Display control 1 (PT1-0 = “00”, VLE2-1 = “00” : No vertical scroll, SPT = “0”, FRCP = “0”,
Display control 2 (BP3-0 = “1000”, FP3-0 = “1000”)
Display control 3 (PTG1-0 = “00”, ISC3-0 = “0000”
Frame cycle control (NO1-0 = “00”, SDT1-0 = “00”, EQ1-0 = “00” : No equalization,
External display interface (RIM1-0 = “00” : 18-bit RGB interface,
Power control 1 (SAP2-0 = “000”, BT2-0 = “000”, AP2–0 = “000”: liquid crystal power supply off,
Power control 2 (DC12-0 = “000”, DC02-00 = “000”, VC2-0 = “000”)
Power control 4 (VCOMG = “0”, VDV4-0 = “00000”, VCM4-0 = “00000”)
RAM address set (AD15–0 = “0000”H)
RAM write data mask (WM17–0 = “18’h00000”: No mask)
J control
Gate scan starting position (SCN4-0 = “00000”)
Vertical scroll (VL7–0 = “00000000”)
1st split-screen (SE17-10 = “11111111”, SS17-10 = “00000000”)
2nd split-screen (SE27-20 = “11111111”, SS27-20 = “00000000”)
Horizontal RAM address position (HEA7-0 = “10000011”, HSA7-0 = “00000000”)
PKP42-40 = “000”, PKP52-50 = “000”, PRP02-00 = “000”, PRP12-10 = “000”)
PKN42-40 = “000”, PKN52-50 = “000”, PRN02-00 = “000”, PRN12-10 = “000”)
Preliminary