Renesas M32R/ECU Series

15
15-22
EXTERNAL BUS INTERFACE
32180 Group User’s Manual (Rev.1.0)
VCCE
VDDE
VCC-BUS
Port
Bus
Connected at 3.3V
3.3V
3.3V
M32R/ECU
Memory
3.3V
VCC
OSC-VCC
Figure 15.6.4 When Both Port and Memory are Connected at 3.3 V
15.6 Example of Bus Voltage Settings Using VCC-BUS
(3) When ports and memory are connected at 5 V and 3.3 V, respectively
Ports and memory can be connected with external circuits via a 5 V interface directly as is and a 3.3 V
interface, respectively.
VCCE
VDDE
VCC-BUS
Port
Bus
Connected at 5 V
5V
3.3V
3.3V
M32R/ECU
Memory
3.3V
VCC
OSC-VCC
Figure 15.6.3 When Port and Memory are Connected at 5 V and 3.3 V, Respectively
(4) When both port and memory are connected at 3.3 V
Ports and memory can be connected with external circuits via 3.3 V interfaces.