Epson manual Summary, Conditions, S1D13504 Total Power Consumption

Page 4	Epson Research and Development
	Vancouver Design Center

1.1 Conditions

The Table 1-1: “S1D13504 Total Power Consumption” below gives an example of a particular environment and its effects on power consumption.

Table 1-1: S1D13504 Total Power Consumption

	Test Condition		Total Power Consumption
		Gray Shades /
	Core VDD = 3.3V IO VDD = 5.0V			Power Save Mode
		Colors	Active
	ISA Bus (8MHz)
				Software	Hardware
	Input Clock = 6MHz	Black-and-White	38.7mW	20mW1	7.59uW2
1	LCD Panel Connected = 320x240 Monochrome	4 Grays	43.9mW
		16 Grays	46.8mW
	Input Clock = 6MHz	4 Colors	44.4mW	20mW1	7.59uW2
2	LCD Panel Connected = 320x240 Color	16 Colors	49.7mW
		256 Colors	51.2mW
	Input Clock = 25MHz	Black-and-White	113.3mW	24mW1	7.59uW2
3	LCD Panel Connected = 640x480 Monochrome
		16 Grays	124.6mW
	Input Clock = 25MHz	16 Colors	145.6mW	24mW1	7.59uW2
4	LCD Panel Connected = 640x480 Color	256 Colors	150.6mW
		64K Colors	150.0mW

Note

1.Conditions for Software SUSPEND:

•CPU interface active (signals toggling)

•CLKI active (6MHz)

•Self-Refresh DRAM

2.Conditions for Hardware SUSPEND:

•CPU interface inactive (high impedance)

•CLKI stopped

•Self-Refresh DRAM

2 Summary

The system design variables in Section 1, “S1D13504 Power Consumption” and in Table 1-1: “S1D13504 Total Power Consumption” show that S1D13504 power consumption depends on the specific implementation. Active Mode power consumption depends on the desired CPU perfor- mance and LCD frame-rate, whereas Power Save Mode consumption depends on the CPU Interface and Input Clock state.

In a typical design environment, the S1D13504 can be configured to be an extremely power-efficient LCD Controller with high performance and flexibility.

S1D13504	Power Consumption
X19A-G-006-04	Issue Date: 01/02/02