
S1C88848 TECHNICAL MANUAL
EPSON
iii
CONTENTS
5.12
Sound Generator .............................................................................................................. 106
5.12.1 Configuration of sound generator ........................................................................................ 106
5.12.2 Control of buzzer output ....................................................................................................... 106
5.12.3 Setting of buzzer frequency and sound level ........................................................................ 107
5.12.4 Digital envelope ................................................................................................................... 108
5.12.5 One-shot output .................................................................................................................... 108
5.12.6 Control of sound generator .................................................................................................. 109
5.12.7 Programming notes .............................................................................................................. 111
5.13
Remote Controller (REM) ................................................................................................ 112
5.13.1 Configuration of remote controller ...................................................................................... 112
5.13.2 Mask option .......................................................................................................................... 113
5.13.3 Carrier .................................................................................................................................. 113
5.13.4 Soft-timer mode .................................................................................................................... 114
5.13.5 Hard-timer mode and REM interrupt ................................................................................... 114
5.13.6 Control of remote controller ................................................................................................ 118
5.13.7 Programming notes .............................................................................................................. 121
5.14
Supply Voltage Detection (SVD) Circuit ......................................................................... 122
5.14.1 Configuration of SVD circuit ............................................................................................... 122
5.14.2 SVD operation ...................................................................................................................... 122
5.14.3 Control of SVD circuit .......................................................................................................... 123
5.14.4 Programming notes .............................................................................................................. 123
5.15
Interrupt and Standby Status ........................................................................................... 124
5.15.1 Interrupt generation conditions ........................................................................................... 125
5.15.2 Interrupt factor flag .............................................................................................................. 125
5.15.3 Interrupt enable register ...................................................................................................... 126
5.15.4 Interrupt priority register and interrupt priority level ......................................................... 126
5.15.5 Exception processing vectors ............................................................................................... 127
5.15.6 Control of interrupt .............................................................................................................. 128
5.15.7 Programming notes .............................................................................................................. 129
5.16
Notes for Low Current Consumption ............................................................................... 130
6
BASIC EXTERNAL WIRING DIAGRAM ..................................................... 131
7
ELECTRICAL CHARACTERISTICS ............................................................ 133
7.1
Absolute Maximum Rating ............................................................................................... 133
7.2
Recommended Operating Conditions .............................................................................. 133
7.3
DC Characteristics .......................................................................................................... 134
7.4
Analog Circuit Characteristics ........................................................................................135
7.5
Power Current Consumption ........................................................................................... 137
7.6
AC Characteristics ........................................................................................................... 138
7.7
Oscillation Characteristics ..............................................................................................142
7.8
Characteristics Curves (reference value) ........................................................................ 143
8
PACKAGE ........................................................................................................ 150
8.1
Plastic Package ................................................................................................................150
8.2
Ceramic Package ............................................................................................................. 151
9
PAD LAYOUT .................................................................................................. 152
9.1
Diagram of Pad Layout ...................................................................................................152
9.2
Pad Coordinates .............................................................................................................. 153
10
PRECAUTIONS ON MOUNTING ................................................................. 154