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I-ii
EPSON
S1C621A0 TECHNICAL HARDWARE
CONTENTS
3.7
LCD Driver (COM0–COM3, SEG0–SEG31) .................. I-27
Segment assignment ............................................... I-30
3.8
Timer .............................................................................. I-31
Timer memory map ................................................. I-31
Timer data .............................................................. I-32
Timer interrupt request ........................................... I-33
Timer reset .............................................................. I-34
3.9
Remote LED Control (R33, REM) .................................. I-35
REM control registers .............................................. I-37
Soft-timer mode ...................................................... I-38
Hard-timer mode ..................................................... I-40
Initializing REM circuit ............................................ I-46
REM circuit programming notes .............................. I-47
3.10 AMP and SVD ................................................................ I-48
AMP (MOS input analog comparator) ....................... I-49
SVD (Supply voltage detector) .................................. I-50
3.11 Interrupt and Halt ............................................................ I-51
Interrupt request ..................................................... I-53
Interrupt mask register ........................................... I-57
Interrupt vector ....................................................... I-57
3.12 Initial Reset ..................................................................... I-59
Reset at power-on ................................................... I-60
RESET .................................................................... I-61
Oscillation detection circuit ..................................... I-62
Watchdog timer ....................................................... I-62
RSTOUT .................................................................. I-63
Initialization by initial reset ..................................... I-63
3.13 Test Input Pin (TEST) ..................................................... I-64
3.14 Lower Current Dissipation .............................................. I-65
CHAPTER 4
TYPICAL EXTERNAL CONNECTION ............................... I-66