
I-ii
EPSON
S1C62N33 TECHNICAL HARDWARE
CONTENTS
CHAPTER 4
PERIPHERAL CIRCUITS AND OPERATION ....................... I-13
4.1
Memory Map ................................................................... I-13
4.2
Resetting Watchdog Timer .............................................. I-19
Configuration of watchdog timer ............................... I-19
Mask option ............................................................. I-19
Control of watchdog timer ........................................ I-20
Programming note .................................................... I-20
4.3
Oscillation Circuit ............................................................. I-21
OSC1 oscillation circuit ............................................ I-21
OSC3 oscillation circuit ............................................ I-21
Configuration of oscillation circuit ............................ I-23
Control of oscillation circuit ..................................... I-24
Programming notes .................................................. I-25
4.4
Input Ports (K00–K03, K10) ............................................ I-26
Configuration of input ports ..................................... I-26
Differential registers and interrupt function.............. I-27
Mask option ............................................................. I-29
Control of input ports ............................................... I-30
Programming notes .................................................. I-32
4.5
Output Ports (R00–R03, R10–R13) ................................ I-34
Configuration of output ports ................................... I-34
Mask option ............................................................. I-35
Control of output ports ............................................. I-38
Programming note .................................................... I-40
4.6
I/O Ports (P00–P03, P10–P13) ....................................... I-41
Configuration of I/O ports ........................................ I-41
I/O control register and I/O mode ............................ I-42
Mask option ............................................................. I-42
Control of I/O ports .................................................. I-43
Programming notes .................................................. I-45