M32C8A Datasheet, PDF (8/372 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M32C/80 Series

Table of Contents
Special Function Register (SFR) Page Reference ............................................................................ B-1
1. Overview ......................................................................................................................................... 1
1.1 Features ..................................................................................................................................................... 1
1.1.1 Applications .......................................................................................................................................... 1
1.1.2 Specifications ........................................................................................................................................ 1
1.2 Product List ............................................................................................................................................... 6
1.3 Block Diagram .......................................................................................................................................... 7
1.4 Pin Assignments ........................................................................................................................................ 8
1.5 Pin Functions ........................................................................................................................................... 15
2. Central Processing Unit (CPU) ..................................................................................................... 18
2.1 General Registers .................................................................................................................................... 19
2.1.1 Data Registers (R0, R1, R2, and R3) .................................................................................................. 19
2.1.2 Address Registers (A0 and A1) .......................................................................................................... 19
2.1.3 Static Base Register (SB) ................................................................................................................... 19
2.1.4 Frame Base Register (FB) .................................................................................................................. 19
2.1.5 User Stack Pointer (USP) and Interrupt Stack Pointer (ISP) .............................................................. 19
2.1.6 Interrupt Table Register (INTB) ......................................................................................................... 19
2.1.7 Program Counter (PC) ........................................................................................................................ 19
2.1.8 Flag Register (FLG) ............................................................................................................................ 19
2.2 High-Speed Interrupt Registers ............................................................................................................... 20
2.3 DMAC-Associated Registers .................................................................................................................. 20
3. Memory ......................................................................................................................................... 21
4. Special Function Registers (SFRs) ............................................................................................... 22
5. Reset ............................................................................................................................................. 33
5.1 Hardware Reset 1 .................................................................................................................................... 33
5.1.1 Reset at a Stable Supply Voltage ........................................................................................................ 33
5.1.2 Power-on Reset ................................................................................................................................... 33
5.2 Hardware Reset 2 (Vdet3 detection function) ......................................................................................... 35
5.3 Software Reset ........................................................................................................................................ 35
5.4 Watchdog Timer Reset ............................................................................................................................ 35
5.5 Internal Registers .................................................................................................................................... 36
6. Power Supply Voltage Detection Function .................................................................................... 37
6.1 Vdet3 Detection Function ....................................................................................................................... 41
6.2 Vdet4 Detection Function ....................................................................................................................... 42
6.2.1 Usage Notes on Vdet4 Detection Interrupt ......................................................................................... 44
6.3 Cold Start/Warm Start Determine Function ............................................................................................ 44
7. Processor Mode ............................................................................................................................ 45
7.1 Processor Mode ....................................................................................................................................... 45
7.2 Setting of Processor Mode ...................................................................................................................... 45
8. Bus ................................................................................................................................................ 49
8.1 Bus Settings ............................................................................................................................................. 49
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