HD64F3684FP Renesas Electronics America, HD64F3684FP Datasheet - Page 398

• 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)
Table 20.1 LVDCR Settings and Select Functions
Legend:
20.2.2
LVDSR indicates whether the power-supply voltage falls below or rises above the respective
specified values.
Note:
Rev.5.00 Nov. 02, 2005 Page 364 of 500
REJ09B0027-0500
LVDE
0
1
1
1
1
Bit
7 to 2
1
0
*
LVDSEL
*
1
0
0
0
Bit Name
LVDDF
LVDUF
Low-Voltage-Detection Status Register (LVDSR)
*: means invalid.
Initialized by LVDR.
LVDCR Settings
LVDRE LVDDE
*
1
0
0
1
Initial
Value
All 1
0*
0*
*
0
1
1
1
R/W
R/W
R/W
LVDUE
*
0
0
1
1
Description
Reserved
These bits are always read as 1, and cannot be modified.
LVD Power-Supply Voltage Fall Flag
[Setting condition]
When the power-supply voltage falls below Vint (D) (typ.
= 3.7 V)
[Clearing condition]
Writing 0 to this bit after reading it as 1
LVD Power-Supply Voltage Rise Flag
[Setting condition]
When the power supply voltage falls below Vint (D) while
the LVDUE bit in LVDCR is set to 1, then rises above Vint
(U) (typ. = 4.0 V) before falling below Vreset1 (typ. = 2.3
V)
[Clearing condition]
Writing 0 to this bit after reading it as 1
Power-On
Reset
O
O
O
O
O
LVDR
O
O
Select Functions
Low-Voltage-
Detection
Falling
Interrupt
O
O
O
Low-Voltage-
Detection
Rising
Interrupt
O
O