Application Note
R01AN6123EJ0100 Rev.1.00 Page
1
of 166
Jun.23.22
RX660 Group, RX210 Group
Differences Between the RX660 Group and the RX210 Group
Introduction
This application note is intended as a reference to points of difference between the peripheral functions, I/O
registers, and pin functions of the RX660 Group and RX210 Group, as well as a guide to key points to
consider when migrating between the two groups.
Unless specifically otherwise noted, the information in this application note applies to the 144-pin package
version of the RX660 Group and the 145-pin package version of the RX210 Group (chip version B) as the
maximum specifications. To confirm details of differences in the specifications of the electrical
characteristics, usage notes, and setting procedures, refer to the User’s Manual: Hardware of the products in
question.
Target Devices
RX660 Group and RX210 Group
RX660 Group, RX210 Group Differences Between the RX660 Group and the RX210 Group
R01AN6123EJ0100 Rev.1.00 Page
2
of 166
Jun.23.22
Contents
1. Comparison of Built-In Functions of RX660 Group and RX210 Group ..................................... 5
2. Comparative Overview of Specifications .................................................................................. 7
2.1 CPU ......................................................................................................................................................... 7
2.2 Operating Modes ..................................................................................................................................... 9
2.3 Address Space ...................................................................................................................................... 10
2.4 Option-Setting Memory ......................................................................................................................... 13
2.5 Voltage Detection Circuit ....................................................................................................................... 15
2.6 Clock Generation Circuit ....................................................................................................................... 20
2.7 Clock Frequency Accuracy Measurement Circuit ................................................................................. 26
2.8 Low Power Consumption ...................................................................................................................... 29
2.9 Register Write Protection Function ........................................................................................................ 34
2.10 Exception Handling................................................................................................................................ 35
2.11 Interrupt Controller................................................................................................................................. 36
2.12 Buses ..................................................................................................................................................... 40
2.13 DMA Controller ...................................................................................................................................... 42
2.14 Data Transfer Controller ........................................................................................................................ 44
2.15 Event Link Controller ............................................................................................................................. 46
2.16 I/O Ports ................................................................................................................................................ 51
2.17 Multi-Function Pin Controller ................................................................................................................. 56
2.18 Multi-Function Timer Pulse Unit 2 and Multi-Function Timer Pulse Unit 3 ............................................ 90
2.19 Port Output Enable 2 and Port Output Enable 3 ................................................................................... 94
2.20 8-Bit Timer ............................................................................................................................................. 98
2.21 Realtime Clock .................................................................................................................................... 100
2.22 Watchdog Timer .................................................................................................................................. 102
2.23 Independent Watchdog Timer ............................................................................................................. 103
2.24 Serial Communications Interface ........................................................................................................ 105
2.25 I
2
C bus Interface .................................................................................................................................. 111
2.26 Serial Peripheral Interface ................................................................................................................... 113
2.27 CRC Calculator .................................................................................................................................... 117
2.28 12-Bit A/D Converter ........................................................................................................................... 119
2.29 D/A Converter and 12-Bit D/A Converter ............................................................................................ 127
2.30 Temperature Sensor............................................................................................................................ 128
2.31 Comparator B and Comparator C ....................................................................................................... 129
2.32 Data Operation Circuit ......................................................................................................................... 131
2.33 RAM ..................................................................................................................................................... 133
2.34 Flash Memory ...................................................................................................................................... 134
2.35 Packages ............................................................................................................................................. 139
3. Comparison of Pin Functions ............................................................................................... 140