PIC18F8520-I/PT Microchip Technology Inc., PIC18F8520-I/PT Datasheet - Page 237

• Manufacturer Part Number: PIC18F8520-I/PT
• Description: 80 PIN, 32 KB FLASH, 2048 RAM, 68 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F8520-I/PT

• A/d Inputs: 16-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 1024 Bytes
• Input Output: 68
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 80-pin TQFP
• Programmable Memory: 32K Bytes
• Ram Size: 2K Bytes
• Speed: 40 MHz
• Timers: 2-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part

22.1
The Low-Voltage Detect Control register controls the
operation of the Low-Voltage Detect circuitry.
REGISTER 22-1:
 2004 Microchip Technology Inc.
Control Register
bit 7-6
bit 5
bit 4
bit 3-0
PIC18F6520/8520/6620/8620/6720/8720
LVDCON REGISTER
bit 7
Unimplemented: Read as ‘0’
IRVST: Internal Reference Voltage Stable Flag bit
1 = Indicates that the Low-Voltage Detect logic will generate the interrupt flag at the specified
0 = Indicates that the Low-Voltage Detect logic will not generate the interrupt flag at the
LVDEN: Low-Voltage Detect Power Enable bit
1 = Enables LVD, powers up LVD circuit
0 = Disables LVD, powers down LVD circuit
LVDL3:LVDL0: Low-Voltage Detection Limit bits
1111 = External analog input is used (input comes from the LVDIN pin)
1110 = 4.64V
1101 = 4.33V
1100 = 4.13V
1011 = 3.92V
1010 = 3.72V
1001 = 3.61V
1000 = 3.41V
0111 = 3.1V
0110 = 2.89V
0101 = 2.78V
0100 = 2.58V
0011 = 2.47V
0010 = 2.27V
0001 = 2.06V
0000 = Reserved
Legend:
R = Readable bit
- n = Value at POR
Note 1: LVDL3:LVDL0 modes which result in a trip point below the valid operating voltage
U-0
—
voltage range
specified voltage range and the LVD interrupt should not be enabled
2: Typical values shown, see parameter D420 in Table 26-3 for more information.
of the device are not tested.
U-0
—
IRVST
R-0
W = Writable bit
‘1’ = Bit is set
LVDEN
R/W-0
(2)
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
LVDL3
R/W-0
LVDL2
R/W-1
x = Bit is unknown
LVDL1
R/W-0
DS39609B-page 235
LVDL0
R/W-1
bit 0