PIC18F4439-E/PT Microchip Technology, PIC18F4439-E/PT Datasheet - Page 21
![IC PIC MCU FLASH 6KX16 44TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC18F4439-E/PT
Manufacturer Part Number
PIC18F4439-E/PT
Description
IC PIC MCU FLASH 6KX16 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2439-ISO.pdf
(322 pages)
3.PIC18F2439-ISO.pdf
(6 pages)
4.PIC18F2439-ISO.pdf
(34 pages)
Specifications of PIC18F4439-E/PT
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
32
Program Memory Size
12KB (6K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
640 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
640 B
Interface Type
I2C, SPI, AUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
32
Number Of Timers
16 bit
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
DV164005, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F4439-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
4.2
Code memory is accessed one byte at a time, via the
4-bit command, ‘1001’ (Table Read, post-increment).
The contents of memory pointed to by the Table Pointer
(TBLPTRU:TBLPTRH:TBLPTRL) are loaded into the
Table Latch and then serially output on SDATA.
The 4-bit command is shifted in LSb first. The Table
Read is executed during the next 8 clocks, then shifted
out on SDATA during the last 8 clocks, LSb to MSb. A
TABLE 4-2:
FIGURE 4-3:
2010 Microchip Technology Inc.
Step 1: Set Table Pointer.
Step 2: Read memory into Table Latch and then shift out on SDATA, LSb to MSb.
4-bit Command
SCLK
SDATA
0000
0000
0000
0000
0000
0000
1001
Read Code Memory, ID Locations,
and Configuration Bits
1
1
2
0E <Addr[21:16]>
6E F8
0E <Addr[15:8]>
6E F7
0E <Addr[7:0]>
6E F6
00 00
0
READ CODE MEMORY SEQUENCE
3
0
Data Payload
TABLE READ POST-INCREMENT INSTRUCTION TIMING (1001)
4
1
P5
SDATA = Input
1
2
3
MOVLW Addr[21:16]
MOVWF TBLPTRU
MOVLW <Addr[15:8]>
MOVWF TBLPTRH
MOVLW <Addr[7:0]>
MOVWF TBLPTRL
TBLRD *+
4
5
6
Preliminary
7
8
P6
delay of P6 must be introduced after the falling edge of
the 8th SCLK of the operand to allow SDATA to
transition from an input to an output. During this time,
SCLK must be held low (see Table 4-2). This operation
also increments the Table Pointer by one, pointing to
the next byte in code memory for the next read.
This technique will work to read any memory in the
000000h to 3FFFFFh address space, so it also applies
to the reading of the ID and configuration registers.
9
LSb
P14
10 11
1
Core Instruction
2
SDATA = Output
12
Shift Data Out
3
13
4
14
5
PIC18FXX39
15 16
6
MSb
P5A
Fetch Next 4-bit Command
1
SDATA = Input
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DS30480C-page 21
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