Renesas M32R/ECU Series User Manual page 741

20
5 V or 3.3 V
5 V or 3.3 V
1–10 µF
1–10 µF
5 V or 3.3 V
5 V or 3.3 V
5 V or 3.3 V
Figure 20.3.4 Microcomputer Ready to Operate State (VCCE = 5.0 V or 3.3 V)
Note 1: Make sure this voltage is the same as VCCE.
Note 2: During RAM backup mode, it automatically switches to the sub-VDC for low-power operation.
Figure 20.3.5 SRAM Data Backup State (VCCE = 5.0 V or 3.3 V)
I/O Control Circuit
Internal Voltage Generator Circuit
VCCE
VDDE
Backup Voltage Generator Circuit
Sub-VDC
EXCVDD
RAM
EXCVCC
(Note 1)
OSC-VCC
AVCC
VCC-BUS
Note 1: Make sure this voltage is the same as VCCE.
Note 2: When the microcomputer is ready to operate, it automatically switches to the main VDC.
I/O Control Circuit
Internal Voltage Generator Circuit
0V
VCCE
VDDE
Backup Voltage Generator Circuit
3.0–5.5V
Sub-VDC
(Note 2)
EXCVDD
1–10 µF
RAM
EXCVCC
1–10 µF
(Note 1)
OSC-VCC
0V
AVCC
0V
VCC-BUS
0V
POWER SUPPLY CIRCUIT
32180
Main VDC
VDC
(Note 2)
CPU
Peripheral Circuit
Flash Memory
PLL
Oscillator Circuit
A-D Converter Circuit
External Bus
32180
Main VDC
VDC
CPU
Peripheral Circuit
Flash Memory
PLL
Oscillator Circuit
A-D Converter Circuit
External Bus
20-8
20.3 Power-Off Sequence
32180 Group User's Manual (Rev.1.0)