PIC18LF44J50-I/ML Microchip Technology, PIC18LF44J50-I/ML Datasheet - Page 60
![IC PIC MCU FLASH 16K 2V 44-QFN](/photos/6/81/68122/150-44-qfn_sml.jpg)
PIC18LF44J50-I/ML
Manufacturer Part Number
PIC18LF44J50-I/ML
Description
IC PIC MCU FLASH 16K 2V 44-QFN
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.PIC18LF24J10-ISS.pdf
(32 pages)
2.PIC18LF24J50-ISS.pdf
(554 pages)
3.PIC18LF24J50-ISS.pdf
(12 pages)
Specifications of PIC18LF44J50-I/ML
Program Memory Type
FLASH
Program Memory Size
16KB (8K x 16)
Package / Case
44-QFN
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
34
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 13x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3776 B
Interface Type
EUSART, I2C, SPI
Maximum Clock Frequency
31 KHz
Number Of Programmable I/os
22
Number Of Timers
5
Operating Supply Voltage
2 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, DM183022, DM183032, DV164136, MA180024
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 13 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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PIC18F46J50 FAMILY
4.5
The Configuration Mismatch (CM) Reset is designed to
detect, and attempt to recover from, random memory
corrupting
Discharge (ESD) events, which can cause widespread
single-bit changes throughout the device, and result in
catastrophic failure.
In PIC18FXXJ Flash devices, the device Configuration
registers (located in the configuration memory space)
are continuously monitored during operation by com-
paring their values to complimentary shadow registers.
If a mismatch is detected between the two sets of
registers, a CM Reset automatically occurs. These
events are captured by the CM bit (RCON<5>). The
state of the bit is set to ‘0’ whenever a CM event occurs;
it does not change for any other Reset event.
A CM Reset behaves similarly to a MCLR, RESET
instruction, WDT time-out or Stack Event Resets. As
with all hard and power Reset events, the device
Configuration Words are reloaded from the Flash
Configuration Words in program memory as the device
restarts.
FIGURE 4-2:
DS39931C-page 60
INTERNAL RESET
PWRT TIME-OUT
INTERNAL POR
Configuration Mismatch (CM)
events.
MCLR
V
DD
TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO V
These
include
Electrostatic
T
PWRT
counting, the device is held in Reset.
4.6
PIC18F46J50 Family devices incorporate an on-chip
PWRT to help regulate the POR process. The PWRT is
always enabled. The main function is to ensure that the
device voltage is stable before code is executed.
The Power-up Timer (PWRT) of the PIC18F46J50 Fam-
ily devices is a 5-bit counter which uses the INTRC
source as the clock input. This yields an approximate
time interval of 32 x 32 μs = 1 ms. While the PWRT is
The power-up time delay depends on the INTRC clock
and will vary from chip-to-chip due to temperature and
process variation. See DC parameter 33 (T
details.
4.6.1
The PWRT time-out is invoked after the POR pulse has
cleared. The total time-out will vary based on the status
of the PWRT. Figure 4-2, Figure 4-3, Figure 4-4 and
Figure 4-5 all depict time-out sequences on power-up
with the PWRT.
Since the time-outs occur from the POR pulse, if MCLR
is kept low long enough, the PWRT will expire. Bringing
MCLR high will begin execution immediately if a clock
source is available (Figure 4-4). This is useful for
testing purposes, or to synchronize more than one
PIC18F device operating in parallel.
Power-up Timer (PWRT)
TIME-OUT SEQUENCE
© 2009 Microchip Technology Inc.
DD
, V
DD
RISE < T
PWRT
PWRT
)
) for
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