HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 413

• Manufacturer Part Number: HD64F36077GHV
• Description: 16BIT MCU FLASH 56K, SMD, LQFP64
• Manufacturer: Renesas Electronics America

Specifications of HD64F36077GHV

• No. Of I/o's: 47
• Ram Memory Size: 4KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 4.5V
• Core Size: 16bit
• Program Memory Size: 56KB
• Oscillator Type: External Only
• Controller Family/series: H8/300H
• Peripherals: ADC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

This LSI incorporates an internal power supply step-down circuit. Use of this circuit enables the
internal power supply to be fixed at a constant level of approximately 3.0 V, independently of the
voltage of the power supply connected to the external V
when an external power supply is used at 3.0 V or above can be held down to virtually the same
low level as when used at approximately 3.0 V.
20.1
Connect the external power supply to the V
between V
simply by adding this external circuit. In the external circuit interface, the external power supply
voltage connected to V
example, for port input/output levels, the V
level is that for the low level. The A/D converter analog power supply is not affected by the
internal step-down circuit.
PSCKT00A_000020020200
Figure 20.1 Power Supply Connection when Internal Step-Down Circuit is Used
When Using Internal Power Supply Step-Down Circuit
CL
and V
SS
, as shown in figure 20.1. The internal step-down circuit is made effective
Section 20 Power Supply Circuit
CC
and the GND potential connected to V
Internal
logic
Step-down circuit
Internal
power
supply
CC
CC
V
level is the reference for the high level, and the V
pin, and connect a capacitor of approximately 0.1 µF
CC
V
V
SS
CL
Stabilization
capacitor (approx. 0.1 µF)
CC
pin. As a result, the current consumed
V
CC
Rev. 1.00 Sep. 16, 2005 Page 383 of 490
= 4.5 to 5.5 V
SS
are the reference levels. For
Section 20 Power Supply Circuit
REJ09B0216-0100
SS