PIC18LF2320-I/SP Microchip Technology, PIC18LF2320-I/SP Datasheet - Page 236
![IC MCU FLASH 4KX16 EEPROM 28DIP](/photos/6/59/65908/150-28-dip_sml.jpg)
PIC18LF2320-I/SP
Manufacturer Part Number
PIC18LF2320-I/SP
Description
IC MCU FLASH 4KX16 EEPROM 28DIP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2220-ISO.pdf
(394 pages)
3.PIC18F2220-ISO.pdf
(6 pages)
4.PIC18F2220-ISO.pdf
(6 pages)
5.PIC18F2220-ISO.pdf
(8 pages)
6.PIC18F2220-ISO.pdf
(6 pages)
7.PIC18F2220-ISO.pdf
(6 pages)
Specifications of PIC18LF2320-I/SP
Core Size
8-Bit
Program Memory Size
8KB (4K x 16)
Core Processor
PIC
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
25
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Controller Family/series
PIC18
No. Of I/o's
25
Eeprom Memory Size
256Byte
Ram Memory Size
512Byte
Cpu Speed
40MHz
No. Of Timers
4
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC18F2220-ISO PDF datasheet #2
- PIC18F2220-ISO PDF datasheet #3
- PIC18F2220-ISO PDF datasheet #4
- PIC18F2220-ISO PDF datasheet #5
- PIC18F2220-ISO PDF datasheet #6
- PIC18F2220-ISO PDF datasheet #7
- Current page: 236 of 394
- Download datasheet (7Mb)
PIC18F2220/2320/4220/4320
22.2
Depending on the power source for the device voltage,
the voltage normally decreases relatively slowly. This
means that the LVD module does not need to be
constantly operating. To decrease the current require-
ments, the LVD circuitry only needs to be enabled for
short periods where the voltage is checked. After doing
the check, the LVD module may be disabled.
Each time that the LVD module is enabled, the circuitry
requires some time to stabilize. After the circuitry has
stabilized, all status flags may be cleared. The module
will then indicate the proper state of the system.
FIGURE 22-4:
DS39599G-page 234
Internally Generated
Internally Generated
Reference Stable
Reference Stable
CASE 1:
CASE 2:
Operation
Enable LVD
Enable LVD
LVDIF
LVDIF
V
V
DD
DD
LOW-VOLTAGE DETECT WAVEFORMS
T
T
IRVST
IRVST
LVDIF may not be set
The following steps are needed to set up the LVD
module:
1.
2.
3.
4.
5.
6.
Figure 22-4 shows typical waveforms that the LVD
module may be used to detect.
LVDIF cleared in software,
LVDIF remains set since LVD condition still exists
Write the value to the LVDL3:LVDL0 bits
(LVDCON register) which selects the desired
LVD trip point.
Ensure that LVD interrupts are disabled (the
LVDIE bit is cleared or the GIE bit is cleared).
Enable the LVD module (set the LVDEN bit in
the LVDCON register).
Wait for the LVD module to stabilize (the IRVST
bit to become set).
Clear the LVD interrupt flag, which may have
falsely become set, until the LVD module has
stabilized (clear the LVDIF bit).
Enable the LVD interrupt (set the LVDIE and the
GIE bits).
LVDIF cleared in software
© 2007 Microchip Technology Inc.
LVDIF cleared in software
V
V
LVD
LVD
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