S1C63666 TECHNICAL MANUAL
EPSON
i
CONTENTS
C
ONTENTS
CHAPTER
1 O
UTLINE
________________________________________________ 1
1.1
Features ......................................................................................................... 1
1.2
Block Diagram .............................................................................................. 2
1.3
Pin Layout Diagram ..................................................................................... 3
1.4
Pin Description ............................................................................................. 4
1.5
Mask Option .................................................................................................. 5
CHAPTER
2 P
OWER
S
UPPLY
AND
I
NITIAL
R
ESET
____________________________ 9
2.1
Power Supply ................................................................................................ 9
2.1.1 Voltage regulator for OSC1 oscillation circuit ......................................... 10
2.1.2 Low-speed operation voltage regulator .................................................... 10
2.1.3 High-speed operation voltage regulator ................................................... 10
2.1.4 Internal operating voltage V
D1 .......................................................................................
10
2.1.5 LCD system voltage circuit ....................................................................... 10
2.1.6 Halver mode and saving power ................................................................ 11
2.1.7 Analog system power supply ..................................................................... 11
2.2
Initial Reset .................................................................................................. 12
2.2.1 Reset terminal (RESET) ............................................................................ 12
2.2.2 Simultaneous high input to terminals K00–K03 ...................................... 13
2.2.3 Internal register at initial resetting ........................................................... 13
2.2.4 Terminal settings at initial resetting ......................................................... 14
2.3
Test Terminal (TEST) ................................................................................... 14
CHAPTER
3 CPU, ROM, RAM ________________________________________ 15
3.1
CPU .............................................................................................................. 15
3.2
Code ROM .................................................................................................... 15
3.3
RAM ............................................................................................................. 15
3.4
Data ROM .................................................................................................... 16
CHAPTER
4 P
ERIPHERAL
C
IRCUITS
AND
O
PERATION
__________________________ 17
4.1
Memory Map ................................................................................................ 17
4.2
Power Control .............................................................................................. 25
4.2.1 Configuration of power supply circuit ...................................................... 25
4.2.2 Power control procedure ........................................................................... 26
4.2.3 I/O memory for power control .................................................................. 27
4.2.4 Programming notes ................................................................................... 29
4.3
Watchdog Timer ........................................................................................... 30
4.3.1 Configuration of watchdog timer .............................................................. 30
4.3.2 Interrupt function ...................................................................................... 30
4.3.3 I/O memory of watchdog timer ................................................................. 31
4.3.4 Programming notes ................................................................................... 31
4.4
Oscillation Circuit ....................................................................................... 32
4.4.1 Configuration of oscillation circuit .......................................................... 32
4.4.2 OSC1 oscillation circuit ............................................................................ 32
4.4.3 OSC3 oscillation circuit ............................................................................ 33
4.4.4 Switching of operating voltage ................................................................. 34
4.4.5 Clock frequency and instruction execution time ....................................... 34
4.4.6 I/O memory of oscillation circuit .............................................................. 35
4.4.7 Programming notes ................................................................................... 36
