Specifications

– i –
SED1560 Series
Contents
OVERVIEW ..........................................................................................................................................................7-1
FEATURES ...........................................................................................................................................................7-1
PAD LAYOUT .......................................................................................................................................................7-2
PAD Center Coordinates ......................................................................................................................................7-3
BLOCK DIAGRAM ................................................................................................................................................7-4
PIN DESCRIPTION ..............................................................................................................................................7-5
Power Supply ...............................................................................................................................................7-5
LCD Driver Supplies ....................................................................................................................................7-5
Microprocessor Interface .............................................................................................................................7-6
Oscillator and Timing Control.......................................................................................................................7-7
LCD Driver Outputs......................................................................................................................................7-8
SPECIFICATIONS ................................................................................................................................................7-9
Absolute Maximum Ratings .........................................................................................................................7-9
DC Characteristics .....................................................................................................................................7-10
Reset..........................................................................................................................................................7-14
Display control timing .....................................................................................................................7-15
Input timing .......................................................................................................................7-15
Output timing ....................................................................................................................7-16
(1) System buses ...........................................................................................................................7-16
(2) System buses ...........................................................................................................................7-18
(3) Serial interface ..........................................................................................................................7-19
FUNCTIONAL DESCRIPTION ...........................................................................................................................7-21
Microprocessor Interface ...........................................................................................................................7-21
Parallel/serial interface ...................................................................................................................7-21
Parallel interface .............................................................................................................................7-21
Serial interface ...............................................................................................................................7-21
Chip select inputs ...........................................................................................................................7-22
Data Transfer .............................................................................................................................................7-22
Status Flag .................................................................................................................................................7-23
Display Data RAM...................................................................................................................................... 7-24
Column Address Counter...........................................................................................................................7-25
Page Address Register ..............................................................................................................................7-25
Initial Display Line Register........................................................................................................................7-25
Output Selection Circuit .............................................................................................................................7-25
SED1560 Output Status............................................................................................................................. 7-27
SED1561 Output Status............................................................................................................................. 7-27
SED1562 Output Status............................................................................................................................. 7-28
Display Timers ...........................................................................................................................................7-28
Line counter and display data latch timing .....................................................................................7-28
FR and SYNC .................................................................................................................................7-28
Common timing signals ..................................................................................................................7-28
LCD Driver .................................................................................................................................................7-31
Display Data Latch Circuit..........................................................................................................................7-32
LCD Driver Circuit ......................................................................................................................................7-32
Oscillator Circuit .........................................................................................................................................7-32