PIC17LC44-08/P Microchip Technology, PIC17LC44-08/P Datasheet - Page 46
![IC MCU OTP 8KX16 PWM 40DIP](/photos/6/61/66192/150-40-dip_sml.jpg)
PIC17LC44-08/P
Manufacturer Part Number
PIC17LC44-08/P
Description
IC MCU OTP 8KX16 PWM 40DIP
Manufacturer
Microchip Technology
Series
PIC® 17Cr
Specifications of PIC17LC44-08/P
Core Processor
PIC
Core Size
8-Bit
Speed
8MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
33
Program Memory Size
16KB (8K x 16)
Program Memory Type
OTP
Ram Size
454 x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 6 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
40-DIP (0.600", 15.24mm)
Processor Series
PIC17LC
Core
PIC
Data Bus Width
8 bit
Data Ram Size
454 B
Interface Type
SCI, USART
Maximum Clock Frequency
33 MHz
Number Of Programmable I/os
33
Number Of Timers
8
Operating Supply Voltage
2 V to 6 V
Maximum Operating Temperature
+ 70 C
Mounting Style
Through Hole
Development Tools By Supplier
ICE2000
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC17LC44-08/PQ
Manufacturer:
Microchip Technology
Quantity:
10 000
Company:
Part Number:
PIC17LC44-08/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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PIC17C4X
7.2
Table writes to external memory are always two-cycle
instructions. The second cycle writes the data to the
external memory location. The sequence of events for
an external memory write are the same for an internal
write.
FIGURE 7-5:
DS30412C-page 46
Note:
Note:
Table Writes to External Memory
If external write GLINTD = '1', Enable bit = '1', '1'
If an interrupt is pending or occurs during
the TABLWT , the two cycle table write
completes. The RA0/INT, TMR0, or T0CKI
interrupt flag is automatically cleared or
the
acknowledged.
AD15:AD0
pending
Instruction
executed
TABLWT WRITE TIMING (EXTERNAL MEMORY)
Instruction
fetched
ALE
WR
OE
peripheral
Q1 Q2 Q3 Q4
'1'
INST (PC-1)
TABLWT
PC
interrupt
Q1 Q2 Q3 Q4
TABLWT cycle1
is
INST (PC+1)
PC+1
Flag bit, Do table write. The highest pending interrupt is cleared.
7.2.2
The “i” operand of the TABLWT instruction can specify
that the value in the 16-bit TBLPTR register is auto-
matically
Example 7-1, the TBLPTR register is not automatically
incremented.
EXAMPLE 7-1:
CLRWDT
MOVLW
MOVWF
MOVLW
MOVWF
MOVLW
TLWT
MOVLW
TABLWT
Q1 Q2 Q3 Q4
Data write cycle
TABLWT cycle2
TBL
TABLE WRITE CODE
incremented
HIGH (TBL_ADDR) ; Load the Table
TBLPTRH
LOW (TBL_ADDR)
TBLPTRL
HIGH (DATA)
1, WREG
LOW (DATA)
0,0,WREG
Data out
TABLE WRITE
Q1 Q2 Q3 Q4
INST (PC+2)
INST (PC+1)
1996 Microchip Technology Inc.
PC+2
for
; Clear WDT
;
;
;
; Load HI byte
;
; Load LO byte
;
;
;
;
the
address
in TABLATCH
in TABLATCH
and write to
program memory
(Ext. SRAM)
next
write.
In
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