M32C85T datasheet(5/542 Pages) RENESAS

Part #	M32C85T

Description	16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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5 / 542 page

A-1

Table of Contents

Quick Reference by Address _____________________ B-1

1. Overview _____________________________________ 1

1.1 Applications ................................................................................................................ 1

1.2 Performance Overview .............................................................................................. 2

1.3 Block Diagram ............................................................................................................ 4

1.4 Product Information ................................................................................................... 5

1.5 Pin Assignments and Descriptions .......................................................................... 7

1.6 Pin Description ......................................................................................................... 15

2. Central Processing Unit (CPU) __________________ 19

2.1 General Registers .................................................................................................... 20

2.1.1 Data Registers (R0, R1, R2 and R3) ................................................................. 20

2.1.2 Address Registers (A0 and A1) ....................................................................... 20

2.1.3 Static Base Register (SB) ................................................................................. 20

2.1.4 Frame Base Register (FB) ................................................................................ 20

2.1.5 Program Counter (PC) ...................................................................................... 20

2.1.6 Interrupt Table Register (INTB) ........................................................................ 20

2.1.7 User Stack Pointer (USP), Interrupt Stack Pointer (ISP) ............................... 20

2.1.8 Flag Register (FLG) ........................................................................................... 20

2.2 High-Speed Interrupt Registers .............................................................................. 21

2.3 DMAC-Associated Registers ................................................................................... 21

3. Memory _____________________________________ 22

4. Special Function Registers (SFR)________________ 23

5. Reset _______________________________________ 45

5.1 Hardware Reset 1 ..................................................................................................... 45

5.1.1 Reset on a Stable Supply Voltage .................................................................... 45

5.1.2 Power-on Reset .................................................................................................. 45

5.2 Brown-Out Detection Reset (Hardware Reset 2) ................................................... 47

5.3 Software Reset ......................................................................................................... 48

5.4 Watchdog Timer Reset ............................................................................................ 48

5.5 Internal Space ........................................................................................................... 49

6. Voltage Detection Circuit _______________________ 50

6.1 Low Voltage Detection Interrupt ............................................................................. 54

6.1.1 Limitations on Exiting Stop/Wait Mode ........................................................... 56

6.2 Cold Start-up / Warm Start-up Determine Function .............................................. 56

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