HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 400

• 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

Section 19 Band-Gap Circuit, Power-On Reset, and Low-Voltage Detection Circuits
19.1
• BGR circuit
• Power-on reset circuit
• Low-voltage detection circuit
• Reset source decision
Rev. 1.00 Sep. 16, 2005 Page 370 of 490
REJ09B0216-0100
Supplies stable reference voltage covering the entire operating voltage range and the operating
temperature range.
Reduces power consumption when BGR is disabled by setting registers.
Uses an external capacitor to generate an internal reset signal when power is first supplied.
LVDR: Monitors the power-supply voltage, and generates an internal reset signal when the
voltage falls below a given value.
LVDI: Monitors the power-supply voltage, and generates an interrupt when the voltage falls
below or rises above respective given values.
Two detection levels for reset generation voltage are available: when only the LVDR circuit is
used, or when the LVDI and LVDR circuits are both used.
The source of a reset can be decided by reading the reset source decision register in the reset
exception handler.
Features
Vcc
[Legend]
Vcc:
VCL:
VBGR:
VCLSEL:
RCSTP:
Power supply
Internal power supply generated from Vcc by the step-down circuit
Reference voltage from BGR
Select signal for the source of the on-chip oscillator power supply
On-chip oscillator stop signal
Step-down circuit
Figure 19.1 Block Diagram around BGR
BGR
VCL
VBGR
VCLSEL
RCSTP
LVD (low-voltage
detection circuit)
oscillator
On-chip