PIC18F458T-I/PT Microchip Technology, PIC18F458T-I/PT Datasheet - Page 262

• Manufacturer Part Number: PIC18F458T-I/PT
• Description: IC MCU FLASH 16KX16 W/CAN 44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F458T-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FIGURE 23-2:
The LVD module has an additional feature that allows
the user to supply the trip voltage to the module from an
external source. This mode is enabled when bits
LVDL3:LVDL0 are set to ‘1111’. In this state, the com-
parator input is multiplexed from the external input pin
LVDIN to one input of the comparator (Figure 23-3).
FIGURE 23-3:
DS41159E-page 260
PIC18FXX8
Externally Generated
Trip Point
LVDEN
LOW-VOLTAGE DETECT (LVD) BLOCK DIAGRAM
LOW-VOLTAGE DETECT (LVD) WITH EXTERNAL INPUT BLOCK DIAGRAM
V
DD
LVDIN
V
DD
LVDIN
EN
Internally Generated
Reference Voltage,
1.2V Typical
V
DD
LVDL3:LVDL0
The other input is connected to the internally generated
voltage reference (parameter #D423 in Section 27.2
“DC Characteristics”). This gives users flexibility,
because it allows them to configure the Low-Voltage
Detect interrupt to occur at any voltage in the valid
operating range.
LVDL3:LVDL0
VxEN
BODEN
LVDCON
Register
BGAP
LVDCON
Register
© 2006 Microchip Technology Inc.
LVDIF
LVDEN
LVD