15
15-21
EXTERNAL BUS INTERFACE
32180 Group User’s Manual (Rev.1.0)
15.6 Example of Bus Voltage Settings Using VCC-BUS
15.6 Example of Bus Voltage Settings Using VCC-BUS
(1) When both port and memory are connected at 5 V
Ports and memory can be connected with external circuits via 5 V interfaces.
VCCE
VDDE
VCC-BUS
Bus
Connected at 5 V
5V
5V
Memory
5V
VCC
OSC-VCC
M32R/ECU
Port
Figure 15.6.1 When Both Port and Memory are Connected at 5 V
(2) When ports and memory are connected at 3.3 V and 5 V, respectively
Ports and memory can be connected with external circuits via a 3.3 V interface directly as is and a 5 V
interface, respectively.
VCCE
VDDE
VCC-BUS
Port
Bus
Connected at 3.3 V
3.3V
5V
5V
M32R/ECU
Memory
5V
VCC
OSC-VCC
Figure 15.6.2 When Port and Memory are Connected at 3.3 V and 5 V, Respectively
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...