HD64F36077GHV Renesas Electronics America, HD64F36077GHV Datasheet - Page 402

• 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
19.2
The low-voltage detection circuit has the following registers.
• Low-voltage-detection control register (LVDCR)
• Low-voltage-detection status register (LVDSR)
• Reset source decision register (LVDRF)
19.2.1
LVDCR selects the compared voltage of the LVDI circuit, sets the detection levels for the LVDR
circuit, enables or disables the LVDR circuit, and enables or disables generation of an interrupt
when the power-supply voltage rises above or falls below the respective levels.
Table 19.1 shows the relationship between the LVDCR settings and functions to be selected.
LVDCR should be set according to table 19.1.
Rev. 1.00 Sep. 16, 2005 Page 372 of 490
REJ09B0216-0100
Bit
7, 6
5
4
3
2
Bit Name

VDDII

LVDSEL

Register Descriptions
Low-Voltage-Detection Control Register (LVDCR)
Initial
Value
All 1
1*
1
1
1
R/W

R/W

R/W

Description
Reserved
These bits are always read as 1 and cannot be modified.
LVDR External Compared Voltage Input Inhibit
0: Use external voltage as LVDI compared voltage
1: Use internal voltage as LVDI compared voltage
Reserved
This bit is always read as 1 and cannot be modified.
LVDR Detection Level Select
0: Reset detection voltage is 2.3 V (Typ.)
1: Reset detection voltage is 3.6 V (Typ.)
When the falling or rising voltage detection interrupt is
used, the reset detection voltage of 2.3 V (Typ.) should
be used. When only a reset detection interrupt is used,
reset detection voltage of 3.6 V (Typ.) should be used.
Reserved
This bit is always read as 1 and cannot be modified.