 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
S1D13706F00A Datasheet(PDF) 65 Page - Epson Company |
|
|
|||||||||||||||||||||||||||||
S1D13706F00A Datasheet(HTML) 65 Page - Epson Company |
|
|
65 / 94 page  S1D13305 Series EPSON 59 Technical Manual 11. MICROPROCESSOR INTERFACE 11.1. System Bus Interface SEL1, SEL2, A0, RD, WR and CS are used as control signals for the microprocessor data bus. A0 is normally connected to the lowest bit of the system address bus. SEL1 and SEL2 change the operation of the RD and WR pins to enable interfacing to either an 8080 or 6800 family bus, and should have a pull-up or pull-down resistor. With microprocessors using an 8080 family interface, the S1D13305 series is normally mapped into the I/O address space. 11.1.1. 8080 series Table 24. 8080 series interface signals 11.1.2. 6800 series Table 25. 6800 series interface signals 11.2. Microprocessor Synchronization The S1D13305 series interface operates at full bus speed, completing the execution of each command within the cycle time, tCYC . The controlling microprocessor’s per- formance is thus not hampered by polling or handshaking when accessing the S1D13305 series. Display flicker may occur if there is more than one consecutive access that cannot be ignored within a frame. The microprocessor can minimize this either by perform- ing these accesses intermittently, or by continuously checking the status flag (D6) and waiting for it to become HIGH. 11.2.1. Display status indication output When CS, A0 and RD are LOW, D6 functions as the display status indication output. It is HIGH during the TV-mode vertical retrace period or the LCD-mode hori- zontal retrace period, and LOW, during the period the controller is writing to the display. By monitoring D6 and writing to the data memory only during retrace periods, the display can be updated without causing screen flicker. 11.2.2. Internal register access The SYSTEM SET and SLEEP IN commands can be used to perform input/output to the S1D13305 series independently of the system clock frequency. These are the only commands that can be used while the S1D13305 series is in sleep mode. 11.2.3. Display memory access The S1D13305 series supports a form of pipelined pro- cessing, in which the microprocessor synchronizes its processing to the S1D13305 series timing. When writing, the microprocessor first issues the MWRITE command. It then repeatedly writes display data to the S1D13305 series using the system bus timing. This ensures that the microprocessor is not slowed down even if the display memory access times are slower than the system bus access times. See Figure 47. When reading, the microprocessor first issues the MREAD command, which causes the S1D13305 series to load the first read data into its output buffer. The microprocessor then reads data from the S1D13305 series using the system bus timing. With each read, the S1D13305 series reads the next data item from the display memory ready for the next read access. See Figure 48. A0 RD WR Function 0 0 1 Status flag read 101 Display data and cursor address read 0 1 0 Display data and parameter write 1 1 0 Command write 0 1 1 Status flag read 111 Display data and cursor address read 0 0 1 Display data and parameter write 1 0 1 Command write Function E R/W A0 MICROPROCESSOR INTERFACE |
Similar Part No. - S1D13706F00A |
|
Similar Description - S1D13706F00A |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
