20
20-2
POWER SUPPLY CIRCUIT
32180 Group User's Manual (Rev.1.0)
20.1 Configuration of the Power Supply Circuit
The 32180 operates with a single 5 V ± 0.5 V or 3.3 V ± 0.3 V power supply.
Unless otherwise noted, 5 V ± 0.5 V and 3.3 V ± 0.3 V in this chapter are referred to simply by 5 V and 3.3 V,
respectively.
Table 20.1.1 Power Supply Functions
Power Supply Type
Pin Name
Function
5.0V or 3.3V
VCCE
Main power supply
AVCC0, AVCC1
Power supply for the A-D converter
VREF0, VREF1
Reference voltage for the A-D converter
VCC-BUS
Power supply for the external bus
OSC-VCC
Power supply for the oscillator circuit
VDDE
Power supply for the internal RAM backup
Figure 20.1.1 Configuration of the Power Supply Circuit (VCCE = 5.0 V or 3.3 V)
20.1 Configuration of the Power Supply Circuit
VCCE
32180
OSC-VCC
AVCC
VCC-BUS
VDDE
EXCVDD
VDC
Note 1: Make sure this voltage is the same as VCCE.
EXCVCC
1–10 µF
I/O Control Circuit
CPU
Peripheral Circuit
Flash Memory
PLL
Oscillator Circuit
A-D Converter Circuit
External Bus
RAM
Internal Voltage Generator Circuit
Main VDC
Backup Voltage Generator Circuit
Sub-VDC
1–10 µF
(Note 1)
Summary of Contents for M32R/ECU Series
Page 17: ...12 This page is blank for reasons of layout...
Page 712: ...CHAPTER 18 OSCILLATOR CIRCUIT 18 1 Oscillator Circuit 18 2 Clock Generator Circuit...
Page 794: ...CHAPTER 22 TYPICAL CHARACTERISTICS...
Page 796: ...APPENDIX 1 MECHANICAL SPECIFICAITONS Appendix 1 1 Dimensional Outline Drawing...
Page 798: ...APPENDIX 2 INSTRUCTION PROCESSING TIME Appendix 2 1 32180 Instruction Processing Time...
Page 802: ...APPENDIX 3 PROCESSING OF UNUSED PINS Appendix 3 1 Example Processing of Unused Pins...