Philips S1D13505 2 Summary

Page 4 Epson Research and Development
Vancouver Design Center
S1D13505 Power Consumption
X23A-G-006-03 Issue Date: 01/02/05
1.1 Conditions
Table 1-1: “S1D13505 Total Power Consumption” below gives an example of a specific
environment and its effects on power consumption.
Note
1. Conditions for Software SUSPEND:
• CPU interface active (signals toggling)
• CLKI active
• 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, “S1D13505 Power Consumption” and in Table 1-1:
“S1D13505 Total Power Consumption” show that S1D13505 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 S1D13505 can be configured to be an extremely power-efficient
LCD Controller with high performance and flexibility.
Table 1-1: S1D13505 Total Power Consumption
Test Condition
VDD = 3.3V
ISA Bus (8MHz)
Gray Shades /
Colors
Total Power Consumption
Active Power Save Mode
Software Hardware
1Input Clock = 6MHz LCD Panel = 320x240 4-bit Single Monochrome Black-and-White 4 Gray Shades
16 Gray Shades
18.6mW
20.3mW
22.8mW 4.29mW10.33µW2
2Input Clock = 6MHz LCD Panel = 320x240 8-bit Single Color 4 Colors 16 Colors
256 Colors
22.3mW
25.3mW
29.0mW 4.32mW10.33µW2
3Input Clock = 25MHz LCD Panel = 640x480 8-bit Dual Monochrome Black-and-White
16 Gray Shades 58.5mW 71.7mW 5.71mW10.33µW2
4Input Clock = 25MHz LCD Panel = 640x480 16-bit Dual Color 16 Colors 256 Colors
64K Colors
93.4mW
98.1mW
101.3mW 5.74mW10.33µW2
5Input Clock = 33.333MHz
CRT = 640x480 Color
16 Colors
256 Colors
64K Colors
221.1mW
234.0mW
237.3mW 6.34mW10.33µW2