HD64336900G Datasheet, PDF (308/408 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

18.2 When Not Using Internal Power Supply Step-Down Circuit
When the internal power supply step-down circuit is not used, connect the external power supply
to the VCL pin and VCC pin, as shown in figure 18.2. The external power supply is then input
directly to the internal power supply. The permissible range for the power supply voltage is 3.0 V
to 3.6 V. Operation cannot be guaranteed if a voltage outside this range (less than 3.0 V or more
than 3.6 V) is input.
V_CC
Step-down circuit
V_CL
Internal ^Internal
logic ^power
supply
V_SS
V_CC = 3.0 to 3.6 V
Figure 18.2 Power Supply Connection when Internal Step-Down Circuit is Not Used
Rev. 1.00, 11/03, page 280 of 376