18 EPD Timing Controller (EPD Tcon)
S1C17F13 TeChniCal Manual
Seiko epson Corporation
18-1
(Rev. 1.0)
EPD Timing Controller (EPD Tcon)
18
Overview
18.1
EPD Tcon is an EPD timing controller that controls an active matrix EPD panel. The features of EPD Tcon are
listed below.
• Supports active matrix EPD panels.
• Controls the EPD panel signals via the parallel interface.
• Reads display data stored in the display RAM (RAM2) and sends it to the EPD panel via SPI Ch.1. (The display
RAM can be accessed from both S1C17 and EPD Tcon.)
Figure 18.1.1 shows the EPD control system configuration.
S1C17
RAM1
Arbiter
Display
RAM
(RAM2)
Flash
memory
Interrupt
controller
Parallel
interface
SPI
Ch.1
EPD Tcon
EPD
panel
Internal data bus
1.1
Figure 18.
EPD Control System Configuration
A dedicated API library is provided for EPD Tcon and all the EPD Tcon functions can be controlled using the API.
For the data format in the display RAM, various settings, and operations, refer to the descriptions of the EPD Tcon
API library (EPD Timing Controller S1C17F13 Manual (separately attached sheet)).
Note: EPD Tcon occupies SPI Ch.1 or the parallel interface while it is running. This peripheral circuit
cannot be accessed from the S1C17.
Interrupt
18.2
EPD Tcon has a function to generate the interrupt shown in Table 18.2.1.
2.1 EPD Tcon Interrupt Function
Table 18.
Interrupt
Interrupt flag
Set condition
Clear condition
Display refresh completion
EPDINTF.ENDIF When an EPD panel display update process-
ing has completed
Writing 1
The EPD Tcon provides an interrupt enable bit corresponding to the interrupt flag. An interrupt request is sent to
the interrupt controller only when the interrupt flag, of which interrupt has been enabled by the interrupt enable bit,
is set. For more information on interrupt control, refer to the “Interrupt Controller” chapter.