PIC18F1220-I/SO Microchip Technology Inc., PIC18F1220-I/SO Datasheet - Page 169

• Manufacturer Part Number: PIC18F1220-I/SO
• Description: Microcontroller; 4 KB Flash; 256 RAM; 256 EEPROM; 16 I/O; 18-Pin-SOIC
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F1220-I/SO

• A/d Inputs: 7-Channel, 10-Bit
• Cpu Speed: 10 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 16
• Interface: USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 18-pin SOIC
• Programmable Memory: 4K Bytes
• Ram Size: 256 Bytes
• Speed: 20 MHz
• Timers: 1-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

18.1
The Low-Voltage Detect Control register controls the
operation of the Low-Voltage Detect circuitry.
REGISTER 18-1:
 2004 Microchip Technology Inc.
Control Register
bit 7-6
bit 5
bit 4
bit 3-0
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 = 4.04V-5.15V
1101 = 3.76V-4.79V
1100 = 3.58V-4.56V
1011 = 3.41V-4.34V
1010 = 3.23V-4.11V
1001 = 3.14V-4.00V
1000 = 2.96V-3.77V
0111 = 2.70V-3.43V
0110 = 2.53V-3.21V
0101 = 2.43V-3.10V
0100 = 2.25V-2.86V
0011 = 2.16V-2.75V
0010 = 1.99V-2.53V
0001 = Reserved
0000 = Reserved
Legend:
R = Readable bit
-n = Value at POR
Note:
U-0
—
voltage range
specified voltage range and the LVD interrupt should not be enabled
LVDL3:LVDL0 modes, which result in a trip point below the valid operating voltage
of the device, are not tested.
U-0
—
IRVST
R-0
W = Writable bit
‘1’ = Bit is set
LVDEN
R/W-0
PIC18F1220/1320
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
DS39605C-page 167
LVDL0
R/W-1
bit 0