Datasheet

Section 15 Power Supply Circuit
Rev.4.00 Nov. 02, 2005 Page 216 of 304
REJ09B0143-0400
15.2 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 V
CL
pin and V
CC
pin, as shown in figure 15.2. 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
CL
V
SS
Internal
logic
Step-down circuit
Internal
power
supply
V
CC
V
CC
= 3.0 to 3.6 V
Figure 15.2 Power Supply Connection when Internal Step-Down Circuit is Not Used