HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 399
![16BIT MCU FLASH 56K, SMD, LQFP64](/photos/19/6/190684/ge64qfp05-40_sml.jpg)
HD64F36077GHV
Manufacturer Part Number
HD64F36077GHV
Description
16BIT MCU FLASH 56K, SMD, LQFP64
Manufacturer
Renesas Electronics America
Datasheet
1.HD64F36077GHV.pdf
(524 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD64F36077GHV
Manufacturer:
RENESAS
Quantity:
340
Part Number:
HD64F36077GHV
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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Section 19 Band-Gap Circuit, Power-On Reset, and Low-Voltage Detection Circuits
Section 19 Band-Gap Circuit, Power-On Reset, and
Low-Voltage Detection Circuits
This LSI can include a band-gap circuit (BGR, band-gap regulator), a power-on reset circuit and
low-voltage detection circuit.
BGR supplies a reference voltage to the on-chip oscillator and low-voltage detection circuit.
Figure 19.1 shows the block diagram of how BGR is allocated.
The low-voltage detection (LVD) circuit consists of two circuits: LVDI (interrupt by low voltage
detection) and LVDR (reset by low voltage detection) circuits.
This circuit is used to prevent abnormal operation (program runaway) from occurring due to the
power supply voltage fall and to recreate the state before the power supply voltage fall when the
power supply voltage rises again.
Even if the power supply voltage falls, the unstable state when the power supply voltage falls
below the guaranteed operating voltage can be removed by entering standby mode when
exceeding the guaranteed operating voltage and during normal operation. Thus, system stability
can be improved. If the power supply voltage falls more, the reset state is automatically entered. If
the power supply voltage rises again, the reset state is held for a specified period, then active mode
is automatically entered.
Figure 19.2 is a block diagram of the power-on reset circuit and the low-voltage detection circuit.
Rev. 1.00 Sep. 16, 2005 Page 369 of 490
LVI0000A_000020030300
REJ09B0216-0100
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