PIC18LF44J50-I/ML Microchip Technology, PIC18LF44J50-I/ML Datasheet - Page 100
![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
6.2.2
The Table Latch (TABLAT) is an 8-bit register mapped
into the Special Function Register (SFR) space. The
Table Latch register is used to hold 8-bit data during
data transfers between program memory and data
RAM.
6.2.3
The Table Pointer (TBLPTR) register addresses a byte
within the program memory. The TBLPTR comprises
three SFR registers: Table Pointer Upper Byte, Table
Pointer High Byte and Table Pointer Low Byte
(TBLPTRU:TBLPTRH:TBLPTRL). These three registers
join to form a 22-bit wide pointer. The low-order 21 bits
allow the device to address up to 2 Mbytes of program
memory space. The 22
ID, the user ID and the Configuration bits.
The Table Pointer register, TBLPTR, is used by the
TBLRD and TBLWT instructions. These instructions can
update the TBLPTR in one of four ways based on the
table operation.
Table 6-1 provides these operations. These operations
on the TBLPTR only affect the low-order 21 bits.
TABLE 6-1:
FIGURE 6-3:
DS39931C-page 100
TBLRD*
TBLWT*
TBLRD*+
TBLWT*+
TBLRD*-
TBLWT*-
TBLRD+*
TBLWT+*
Example
21
TABLE LATCH REGISTER (TABLAT)
TABLE POINTER REGISTER
(TBLPTR)
TABLE POINTER OPERATIONS WITH TBLRD AND TBLWT INSTRUCTIONS
TBLPTRU
nd
TABLE POINTER BOUNDARIES BASED ON OPERATION
ERASE: TBLPTR<20:10>
bit allows access to the device
16
15
TABLE WRITE: TBLPTR<20:6>
TBLPTR is incremented before the read/write
TBLPTR is decremented after the read/write
TBLPTR is incremented after the read/write
TABLE READ: TBLPTR<21:0>
TBLPTRH
Operation on Table Pointer
TBLPTR is not modified
registers is written to. When the timed write to program
6.2.4
TBLPTR is used in reads, writes and erases of the
Flash program memory.
When a TBLRD is executed, all 22 bits of the TBLPTR
determine which byte is read from program memory
into TABLAT.
When a TBLWT is executed, the seven Least Significant
bits (LSbs) of the Table Pointer register (TBLPTR<6:0>)
determine which of the 64 program memory holding
memory begins (via the WR bit), the 12 Most Significant
bits (MSbs) of the TBLPTR (TBLPTR<21:10>)
determine which program memory block of 1024 bytes
is written to. For more information, see Section 6.5
“Writing to Flash Program Memory”.
When an erase of program memory is executed, the
12 MSbs of the Table Pointer register point to the
1024-byte block that will be erased. The LSbs are
ignored.
Figure 6-3 illustrates the relevant boundaries of
TBLPTR based on Flash program memory operations.
8
7
TABLE POINTER BOUNDARIES
TBLPTRL
© 2009 Microchip Technology Inc.
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