TABLE OF CONTENTS
Chapter 1 General Description
1.1 Overview ................................................................................................................. 1-1
1.2 Features .................................................................................................................. 1-1
1.3 Block Diagram ........................................................................................................ 1-3
1.4 Pin Configuration .................................................................................................... 1-4
1.5 Explanation of Pins ................................................................................................. 1-5
1.5.1 Explanation of Each Pin ................................................................................ 1-5
1.5.2 PROM-Related Pins .................................................................................... 1-10
1.5.3 Processing of Unused Pins ........................................................................ 1-11
Chapter 2 Power Supply System
2.1 Overview ................................................................................................................. 2-1
2.2 Power Supply System Circuit Configuration .......................................................... 2-2
2.3 Logic Power Supply and Backup Circuits .............................................................. 2-3
2.3.1 Configuration of Logic Power Supply ........................................................... 2-3
2.3.2 Operations of Optional 1.5V Logic Power Supply Circuits ........................... 2-4
2.3.3 Operations of Optional 3.0V Logic Power Supply Circuits ........................... 2-4
Chapter 3 Crystal Oscillation Circuit
3.1 Overview ................................................................................................................. 3-1
3.2 Configuration of Crystal Oscillation Circuit ............................................................ 3-1
Chapter 4 PROM
4.1 Overview ................................................................................................................. 4-1
4.2 Explanation of Pins ................................................................................................. 4-1
4.3 PROM Mode ........................................................................................................... 4-3
4.3.1 Setting the PROM Mode .............................................................................. 4-3
4.3.2 PROM Mode Functions ................................................................................ 4-3
4.3.3 Connection to the EPROM Writer ................................................................. 4-4
Chapter 5 TST3 Pin
5.1 Overview ................................................................................................................. 5-1
5.2 Registers To Be Changed By TST3 ........................................................................ 5-3
Appendixes
Appendix A Package Dimensional Drawing .................................................... Appendix-1
Appendix B Electrical Characteristics ............................................................. Appendix-2