HD64F3048F16 Datasheet, PDF (54/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 1 Overview
1.4.4 V_CL Pin
The H8/3048B Group 5 V operation models have a V_CL (internal step-down) pin, to which a 0.1 µF
internal voltage stabilization capacitor must be connected.
The method of connecting the external capacitor is shown in figure 1.4.
Do not connect the V_CC power supply to the V_CL pin. (Connect the V_CC power supply to other V_CC
pins as usual.) Note that the V_CL output pin occupies the same location as a V_CC pin in the
H8/3048F, H8/3048ZTAT and on-chip mask ROM models (H8/3048, H8/3047, H8/3045, and
H8/3044).
External
capacitor
0.1 µF
V_CL (Pin 1)
H8/3048B Group
(5 V operation model)
V_CC power
supply
V_CC (Pin 1)
H8/3048B Group (3 V operation model)
H8/3048 Group
Do not connect the V_CC power supply to
the V_CL pin. (Connect the V_CC power
supply to other V_CC pins as usual.)
Place the capacitor close to the pin.
These versions have a V_CC power supply
pin in the same pin position as a V_CC pin in
the H8/3048F-ONE.
Figure 1.4 Method of Connecting H8/3048B Group V_CL Capacitor
The 3 V operation models of the H8/3048B Group do not have a V_CL pin. The 3 V operation
models have a V_CC power supply pin at the location of the V_CL pin in the 5 V operation models.
Therefore, 3 V operation models do not require connection of an external capacitor, and this pin
should be connected to the power supply in the same way as other V_CC pins.
Rev. 3.00 Sep 27, 2006 page 26 of 872
REJ09B0325-0300