
S1C8F626 TECHNICAL MANUAL
EPSON
i
CONTENTS
Contents
1
INTRODUCTION .............................................................................................. 1
1.1
Features ............................................................................................................................. 1
1.2
Block Diagram ................................................................................................................... 2
1.3
Pins .................................................................................................................................... 3
1.3.1 Pin layout diagram ................................................................................................................... 3
1.3.2 Pin description ......................................................................................................................... 5
1.4
Mask Option ....................................................................................................................... 6
2
POWER SUPPLY ............................................................................................... 7
2.1
Operating Voltage .............................................................................................................. 7
2.2
Internal Power Supply Circuit ........................................................................................... 7
3
CPU ..................................................................................................................... 8
3.1
CPU ...................................................................................................................................8
3.2
Internal Memory ................................................................................................................ 8
3.2.1 Flash EEPROM ........................................................................................................................ 8
3.2.2 RAM .......................................................................................................................................... 8
3.2.3 I/O memory ............................................................................................................................... 8
3.2.4 Display memory ........................................................................................................................ 8
3.3
Exception Processing Vectors ........................................................................................... 9
3.4
CC (Customized Condition Flag) ...................................................................................... 9
3.5
CPU Mode ......................................................................................................................... 9
4
INITIAL RESET ............................................................................................... 10
4.1
Initial Reset Factors ..........................................................................................................10
________
4.1.1 RESET terminal ....................................................................................................................... 10
4.1.2 Simultaneous LOW level input at input port terminals K00–K03 ........................................... 10
4.1.3 Initial reset sequence ............................................................................................................... 11
4.2
Initial Settings After Initial Reset ...................................................................................... 12
5
PERIPHERAL CIRCUITS AND THEIR OPERATION ................................ 13
5.1
I/O Memory Map .............................................................................................................. 13
5.2
System Controller ............................................................................................................. 29
5.2.1 Setting the CPU mode ............................................................................................................. 29
5.2.2 Setting the stack page .............................................................................................................. 29
5.2.3 Control of system controller .................................................................................................... 30
5.2.4 Programming note ................................................................................................................... 30
5.3
Watchdog Timer ................................................................................................................31
5.3.1 Configuration of watchdog timer ............................................................................................ 31
5.3.2 Interrupt function .................................................................................................................... 31
5.3.3 Control of watchdog timer ...................................................................................................... 32
5.3.4 Programming notes ................................................................................................................. 32
5.4
Oscillation Circuits and Operating Mode ........................................................................ 33
5.4.1 Configuration of oscillation circuits ....................................................................................... 33
5.4.2 Mask option ............................................................................................................................. 33
5.4.3 OSC1 oscillation circuit .......................................................................................................... 33
5.4.4 OSC3 oscillation circuit .......................................................................................................... 33
5.4.5 Switching the CPU clocks ....................................................................................................... 34
5.4.6 Switching the operating mode ................................................................................................. 35
5.4.7 Control of oscillation circuit and operating mode .................................................................. 35
5.4.8 Programming notes ................................................................................................................. 36