PIC18C452/JW Microchip Technology, PIC18C452/JW Datasheet - Page 176

• Manufacturer Part Number: PIC18C452/JW
• Description: IC MCU EPROM 16KX16 A/D 40CDIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Cr

Specifications of PIC18C452/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: 33
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: EPROM, UV
• 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: 0°C ~ 70°C
• Package / Case: 40-CDIP (0.600", 15.24mm) Window
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

PIC18CXX2
FIGURE 17-2:
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 (Figure 17-3).
FIGURE 17-3:
DS39026C-page 174
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
Internally Generated
Nominal Reference Voltage
1.2V
EN
V
DD
This gives flexibility, because it allows a user to config-
ure the Low Voltage Detect interrupt to occur at any
voltage in the valid operating range.
VxEN
BODEN
LVD Control
Register
BGAP
LVD Control
Register
LVDIF
2000 Microchip Technology Inc.
LVDEN
LVD