UPD161602AP 데이터 시트보기 (PDF) - NEC => Renesas Technology
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UPD161602AP
NEC => Renesas Technology
UPD161602AP Datasheet PDF : 23 Pages
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µPD161602A/B
(2/2)
Pin Symbol
Pin Name
Pad No. I/O
Description
VCsel
CM
COM amplitude 428
output fixing signal
8-color display 433
mode switching
AP
Output SW
435
ON/OFF
Input
Input
Input
The VCOM output is fixed to L. When the VCOM output is not used, VCsel needs
to be fixed to L.
VCsel = L: VCOM output fixed to L
VCsel = H: VCOM signal output in correspondence with POL signal
The operating mode is switched to 8-color mode. In this mode, turn off the γ -
resistor, amplifier, and BIAS circuit. However, when the γ -correction power supply
is input externally, the γ -circuit current will flow continuously.
CM = L: Normal display mode
CM = H: 8-color display mode
This pin turns ON/OFF the BIAS circuit and turns on the output SW and amplifier.
When AP is H, the amplifier is set and the LCD is driving.
The amplifier output and output SW are turned on at the rising edge of AP,
starting the LCD drive. Note that the output SW is turned off at the rising edge of
STB and the output becomes Hi-Z.
For the AP input timing, refer to Switching Characteristics Waveform.
GAM
Osel
V0 to V4
BA
External γ usage 432
selection
Driver output
430
count switching
γ -corrected power 461 to 463,
supplies
457 to 459, 453
to 455, 449 to
BIAS current
451, 445 to 447
431
adjustment
function
Input
Input
−
Input
When the γ -correction power supply is input externally, switch GAM to H. If two or
more chips are used, be sure to input the γ -correction power supply externally.
Figure 4–1 shows an input example of the γ -correction power supply.
GAM = L: External γ -correction power supply not input (open)
GAM = H: External γ -correction power supply input
The output count can be selected. When Osel = H, the unused pins S1 to S18 and
S379 to S396 always become Hi-Z.
Osel = L: 396 outputs
Osel = H: 360 outputs
These pins input the γ -corrected power supplies from outside, the relationship
below must be observed. Also, be sure to stabilize the gray-scale-level power
supply during gray-scale voltage output.
VSS2 ≤ V4 ≤ V3 ≤ V2 ≤ V1 ≤ V0 ≤ VDD2
This pin adjusts the BIAS current. Select either the high power mode or low power
mode.
BA = L: Low power mode
BA = H: high power mode
TESTIN
TESTO1,
TESTO2
VDD1
VDD2
VSS1
TEST input pin
TEST output pin
Logic power
supply
Driver power
supply
Logic ground
480
Input Set to H or leave open
478,
Output Leave open.
479
416 to 418, 482 − 2.2 to 3.6 V
to 484
412 to 414, 494 − 4.5 to 5.5 V
to 496
420 to 422, 486
−
Ground
VSS2
Driver ground
to 488
424 to 426, 490
−
Ground
Dummy1 to Dummy
dummy40
to 492
397 to 408, 411,
− This pin is dummy.
415, 419, 423, 427,
444, 448, 452, 456,
460, 464, 481, 485,
489, 493, 487, 499
to 510
Caution
To avoid latchup failure, the sequence when turning on the power must be VDD1 → logic input →
VDD2 →gray-scale power supply (V0 to V4), and the reverse sequence when turning off the power.
Follow this sequence during shift periods as well.
8
Data Sheet S15381EJ1V0DS
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