S1D13705F00A200 Epson, S1D13705F00A200 Datasheet - Page 87

• Manufacturer Part Number: S1D13705F00A200
• Manufacturer: Epson

Specifications of S1D13705F00A200

• Operating Supply Voltage (typ): 3.3/5V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: TQFP
• Pin Count: 80
• Mounting: Surface Mount
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / Rohs Status: Compliant

2: INITIALIZATION
2 I
2.1 Display Buffer Location
2.2 Register Values
2-2
Prior to doing anything else with the S1D13705 the controller must be initialized. Initialization is
the process of setting up the control registers to a known state in order to generate proper display
signals.
Before we can perform the initialization we have to know where to find the S1D13705 display
memory and control registers.
The S1D13705 contains 80 kilobytes of internal display memory. External support logic must be
employed to decode the starting address for this display memory in CPU address space. On the
S5U13705B00C PC platform evaluation boards the address is usually fixed at F00000h.
Alternatively the address can be set to D0000h.
The control registers are located by adding 1FFE0h (128 Kb less 32 bytes) to the base memory
address. Thus, on the typical PC platform, we access control register 0 at address F1FFE0h. Control
register 5 would be located at address F1FFE5, etc.
This section describes the register settings and sequence of setting the registers. In addition to these
setting the Look-Up Table must be programmed with appropriate colors. Look-Up Table setup is not
covered here. See “Section” 4 on page 2-7 of this manual for Look-Up Table programming details.
The following initialization, presented in table form, shows the sequences and values to set the
registers. The notes column comments the reason for the particular value being written.
This example writes to all the necessary registers. Initially, when the S1D13705 is powered up, all
registers, unless noted otherwise in the specification, are set to zero. This example programs these
registers to zero to establish a known state. In practice, it may be possible to write to only a subset of
the registers.
The example initializes a S1D13705 to control a panel with the following specifications:
• 320 240 color single passive LCD panel at 70Hz.
• Color Format 2, 8-bit data interface.
• 8 bit-per-pixel (256 colors).
• 6 MHz input clock (CLKI).
NITIALIZATION
EPSON
S1D13705F00A PROGRAMMING NOTES
AND EXAMPLES (X27A-G-002-01)