HD64F36912GFH Renesas Electronics America, HD64F36912GFH Datasheet - Page 316

• Manufacturer Part Number: HD64F36912GFH
• Description: IC H8 MCU FLASH 8K 32-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F36912GFH

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 12MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 17 Band-Gap Circuit, Power-On Reset, and Low-Voltage Detection Circuits
17.1
Rev. 3.00 Sep. 14, 2006 Page 286 of 408
REJ09B0105-0300
BGR circuit
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.
Power-on reset circuit
Uses an external capacitor to generate an internal reset signal when power is first supplied.
Low-voltage detection circuit
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.
Features
Vcc
BGRE
[Legend]
Vcc:
BGRE:
VCL:
VBGR:
VCLSEL:
RCSTP:
LVDE:
Power supply
BGR circuit enable signal
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
LVD enable signal
Step-down circuit
Figure 17.1 Block Diagram around BGR
BGR
VCL
VBGR
VCLSEL
RCSTP
LVDE
LVD (low-voltage
detection circuit)
oscillator
On-chip