HD64F3684FP Renesas Electronics America, HD64F3684FP Datasheet - Page 396

• Manufacturer Part Number: HD64F3684FP
• Description: IC H8 MCU FLASH 32K 64LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F3684FP

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: PWM, WDT
• Number Of I /o: 45
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 20 Power-On Reset and Low-Voltage Detection Circuits (Optional)
20.2
The low-voltage detection circuit has the following registers.
20.2.1
LVDCR is used to enable or disable the low-voltage detection circuit, set the detection levels for
the LVDR function, enable or disable the LVDR function, and enable or disable generation of an
interrupt when the power-supply voltage rises above or falls below the respective levels.
Rev.5.00 Nov. 02, 2005 Page 362 of 500
REJ09B0027-0500
Figure 20.1 Block Diagram of Power-On Reset Circuit and Low-Voltage Detection Circuit
Vcc
Low-voltage-detection control register (LVDCR)
Low-voltage-detection status register (LVDSR)
C
RES
RES
[Legend]
PSS:
LVDCR:
LVDSR:
LVDRES:
LVDINT:
Vreset:
Vint:
Register Descriptions
Low-Voltage-Detection Control Register (LVDCR)
Ladder
resistor
Prescaler S
Low-voltage-detection control register
Low-voltage-detection status register
Low-voltage-detection reset signal
Low-voltage-detection interrupt signal
Reset detection voltage
Power-supply fall/rise detection voltage
Vint
Vreset
Reference
voltage
generator
Noise canceler
Noise canceler
+
+
LVDRES
LVDINT
Interrupt
control
circuit
CK
R
PSS
Low-voltage detection circuit
Power-on reset circuit
OVF
LVDCR
LVDSR
R
S
Q
Interrupt
request
Internal reset
signal