Page 4 Epson Research and Development
Vancouver Design Center
S1D13504 Power Consumption
X19A-G-006-04 Issue Date: 01/02/02

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.
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.
Table 1-1: S1D13504 Total Power Consumption
Test Condition
Core VDD = 3.3V IO VDD = 5.0V
ISA Bus (8MHz)
Gray Shades /
Colors
Total Power Consumption
Active Power Save Mode
Software Hardware
1Input Clock = 6MHz
LCD Panel Connected = 320x240 Monochrome Black-and-Whi te
4 Grays
16 Grays
38.7mW
43.9mW
46.8mW 20mW17.59uW2
2Input Clock = 6MHz
LCD Panel Connected = 320x240 Color 4 Colors
16 Colors
256 Colors
44.4mW
49.7mW
51.2mW 20mW17.59uW2
3Input Clock = 25MHz
LCD Panel Connected = 640x480 Monochrome Black-and-Whi te
16 Grays 113.3mW
124.6mW 24mW17.59uW2
4Input Clock = 25MHz
LCD Panel Connected = 640x480 Color 16 Colors
256 Colors
64K Colors
145.6mW
150.6mW
150.0mW 24mW17.59uW2