UG-2828GDEDF02 Datasheet, PDF (18/29 Pages) List of Unclassifed Manufacturers – OEL Display Module

Univision Technology Inc.
4. Functional Specification
Doc. No: SAS1-XXXX-A
4.1. Commands
Refer to the Technical Manual for the SEPS225
4.2 Power down and Power up Sequence
To protect OEL panel and extend the panel life time, the driver IC power up/down
routine should include a delay period between high voltage and low voltage power
sources during turn on/off. It gives the OEL panel enough time to complete the
action of charge and discharge before/after the operation.
4.2.1 Power up Sequence:
1. Power up VDD
2. Send Display off command
3. Clear Screen
4. Power up VDDH
5. Delay 100ms
(when VDD is stable)
6. Send Display on command
VDDH
VDD
Ground
VDD on
VDDH on
Display on
4.2.2 Power down Sequence:
1. Send Display off command
2. Power down VDDH
3. Delay 100ms
(when VDDH is reach 0 and
panel is completely discharges)
4. Power down VDD
VDDH
VDD
Ground
Display off
VDDH off
VDD off
4.3 Reset Circuit
When RESETB input is low, the chip is initialized with the following status:
1. Frame frequency: 90Hz
2. OSC: internal OSC
3. Internal OSC: ON
4. DDRAM write horizontal address: MX1 = 00h, MX2 = 7Fh
5. DDRAM write vertical address: MY1 = 00h, MY2 = 7Fh
6. Display data RAM write: HC = 1, VC = 1, HV = 0
7. RGB data swap: OFF
8. Row scan shift direction: G0, G1, … , G126, G127
9. Column data shift direction: S0, S1, … , S382, S383
10. Display ON/OFF: OFF
11. Panel display size: FX1 = 00h, FX2 = 7Fh, FY1 = 00h, FY2 = 7Fh
12. Display data RAM read column/row address: FAC = 00h, FAR = 00h
13. Precharge time(R/G/B): 0 clock
14. Precharge current(R/G/B): 0 uA
15. Driving current(R/G/B): 0 uA
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