of 145
May 22.23
Contents
1. Comparison of Built-In Functions of RX26T Group and RX23T Group ..................................... 4
2. Comparative Overview of Specifications .................................................................................. 6
2.1 CPU ......................................................................................................................................................... 6
2.2 Operating Modes ..................................................................................................................................... 8
2.3 Address Space ........................................................................................................................................ 9
2.4 Resets ................................................................................................................................................... 10
2.5 Option-Setting Memory ......................................................................................................................... 11
2.6 Voltage Detection Circuit ....................................................................................................................... 13
2.7 Clock Generation Circuit ....................................................................................................................... 26
2.8 Low Power Consumption ...................................................................................................................... 31
2.9 Register Write Protection Function ........................................................................................................ 36
2.10 Interrupt Controller................................................................................................................................. 37
2.11 Buses ..................................................................................................................................................... 41
2.12 Data Transfer Controller ........................................................................................................................ 43
2.13 I/O ports ................................................................................................................................................. 45
2.14 Multi-Function Pin Controller ................................................................................................................. 49
2.15 Multi-Function Timer Pulse Unit 3 ......................................................................................................... 78
2.16 Port Output Enable 3 ............................................................................................................................. 82
2.17 8-bit Timer ............................................................................................................................................. 90
2.18 Compare Match Timer ........................................................................................................................... 92
2.19 Independent Watchdog Timer ............................................................................................................... 93
2.20 Serial Communications Interface .......................................................................................................... 96
2.21 I
2
C Bus Interface ................................................................................................................................. 100
2.22 Serial Peripheral Interface ................................................................................................................... 103
2.23 CRC Calculator .................................................................................................................................... 106
2.24 12-Bit A/D Converter ........................................................................................................................... 108
2.25 D/A Converter and 12-Bit D/A Converter ............................................................................................ 118
2.26 Comparator C ...................................................................................................................................... 119
2.27 Data Operation Circuit ......................................................................................................................... 122
2.28 RAM ..................................................................................................................................................... 124
2.29 Flash Memory ...................................................................................................................................... 125
2.30 Packages ............................................................................................................................................. 130
3. Comparison of Pin Functions ............................................................................................... 131
3.1 64-Pin Package ................................................................................................................................... 131
3.2 48-Pin Package ................................................................................................................................... 135
4. Important Information When Migrating Between MCUs ....................................................... 138
4.1 Notes on Pin Design ............................................................................................................................ 138
4.1.1 VCL Pin (External Capacitor) ............................................................................................................ 138