PIC18C242/JW Microchip Technology, PIC18C242/JW Datasheet - Page 177

• Manufacturer Part Number: PIC18C242/JW
• Description: IC MCU EPROM 8KX16 A/D 28CDIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C242/JW

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: EPROM, UV
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-CDIP (0.300", 7.62mm) Window
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

17.1
The Low Voltage Detect Control register controls the
operation of the Low Voltage Detect circuitry.
REGISTER 17-1:
2000 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
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 = 4.5V min. - 4.77V max.
1101 = 4.2V min. - 4.45V max.
1100 = 4.0V min. - 4.24V max.
1011 = 3.8V min. - 4.03V max.
1010 = 3.6V min. - 3.82V max.
1001 = 3.5V min. - 3.71V max.
1000 = 3.3V min. - 3.50V max.
0111 = 3.0V min. - 3.18V max.
0110 = 2.8V min. - 2.97V max.
0101 = 2.7V min. - 2.86V max.
0100 = 2.5V min. - 2.65V max.
0011 = 2.4V min. - 2.54V max.
0010 = 2.2V min. - 2.33V max.
0001 = 2.0V min. - 2.12V max.
0000 = 1.8V min. - 1.91V max.
Note:
Legend:
R = Readable bit
U = Unimplemented bit, read as ‘0’
U-0
—
specified 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
LVDEN
R/W-0
W = Writable bit
- n = Value at POR reset
LVDL3
R/W-0
LVDL2
R/W-1
PIC18CXX2
LVDL1
R/W-0
DS39026C-page 175
LVDL0
R/W-1
bit 0