SED1374 Datasheet, PDF (276/420 Pages) Epson Company – SED1374 Embedded Memory Color LCD Controller

Page 4
Epson Research and Development
Vancouver Design Center
1.1 Conditions
Table 1-1: “SED1374 Total Power Consumption” below gives an example of a specific environment
and its effects on power consumption.
Table 1-1: SED1374 Total Power Consumption
Test Condition
Core V_DD = 3.3V, IO V_DD = 3.3V
BUSCLK = 8.33MHz
Gray Shades /
Colors
Core
Power Consumption
Active
Power Save Mode
IO
Total Software Hardware
Input Clock = 6MHz
1 LCD Panel = 320x240 4-bit Single
Monochrome
Black-and-White 5.29mW
4 Gray Shades 6.86mW
16 Gray Shades 8.15mW
0.3mW
0.43mW
0.55mW
5.59mW
7.29mW
8.70mW
1.58mW¹
1.19mW²
Input Clock = 6MHz
2 Colors
2 LCD Panel = 320x240 4-bit Single Color 4 Colors
16 Colors
6.82mW
7.58mW
8.98mW
1.13mW 7.95mW
2.29mW 9.86mW 1.58mW¹
2.25mW 11.23mW
1.19mW²
Input Clock = 25MHz
3 LCD Panel = 640x480 8-bit Single
Monochrome
Black-and-White 21.38mW 0.92mW 22.30mW 3.09mW¹ 2.71mW²
4
Input Clock = 25MHz
LCD Panel = 640x480 8-bit Single Color
2 Colors
23.66mW 2.40mW 26.07mW 3.09mW¹ 2.71mW²
Input Clock = 25MHz
5 LCD Panel = 640x480 8-bit Dual
Monochrome
Black-and-White 20.93mW 0.88mW 21.81mW 3.09mW¹ 2.71mW²
Input Clock = 25MHz
6 LCD Panel = 640x480 8-bit Dual Color 2 Colors
23.78mW 1.93mW 25.72mW 3.09mW¹ 2.71mW²
Input Clock = 25MHz
7 LCD Panel = 640x480 9-bit TFT
2 Colors
16.48mW 8.07mW 24.55mW 3.09mW¹ 2.71mW²
Note
1. Conditions for Software Power Save:
• CPU interface active (signals toggling)
• CLKI active
2. Conditions for Hardware Power Save:
• CPU interface inactive (high impedance)
• CLKI active
SED1374
X26A-G-006-01
Power Consumption
Issue Date: 98/10/27