PIC16LC717-E/P Microchip Technology, PIC16LC717-E/P Datasheet - Page 24
![IC MCU OTP 2KX14 A/D PWM 18DIP](/photos/6/76/67657/18-dip_300mil__sml.jpg)
PIC16LC717-E/P
Manufacturer Part Number
PIC16LC717-E/P
Description
IC MCU OTP 2KX14 A/D PWM 18DIP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16LC717-E/P
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
15
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
18-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
PIC16LC717E/P
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PIC16C717/770/771
2.3
The program counter (PC) specifies the address of the
instruction to fetch for execution. The PC is 13 bits
wide. The low byte is called the PCL register. This reg-
ister is readable and writable. The high byte is called
the PCH register. This register contains the PC<12:8>
bits and is not directly readable or writable. All updates
to the PCH register occur through the PCLATH register.
2.3.1
PIC16C717/770/771 devices are capable of address-
ing a continuous 8K word block of program memory.
The CALL and GOTO instructions provide only 11 bits of
address to allow branching within any 2K program
memory page. When doing a CALL or GOTO instruction,
the upper 2 bits of the address are provided by
PCLATH<4:3>. When doing a CALL or GOTO instruc-
tion, the user must ensure that the page select bits are
programmed so that the desired program memory
page is addressed. A return instruction pops a PC
address off the stack onto the PC register. Therefore,
manipulation of the PCLATH<4:3> bits are not required
for the return instructions (which POPs the address
from the stack).
DS41120B-page 22
PCL and PCLATH
PROGRAM MEMORY PAGING
2.4
The stack allows a combination of up to 8 program calls
and interrupts to occur. The stack contains the return
address from this branch in program execution.
Mid-range devices have an 8-level deep x 13-bit wide
hardware stack. The stack space is not part of either
program or data space and the stack pointer is not
readable or writable. The PC is PUSHed onto the stack
when a CALL instruction is executed or an interrupt
causes a branch. The stack is POPed in the event of a
RETURN, RETLW or a RETFIE instruction execution.
PCLATH is not modified when the stack is PUSHed or
POPed.
After the stack has been PUSHed eight times, the ninth
push overwrites the value that was stored from the first
push. The tenth push overwrites the second push (and
so on).
FIGURE 2-4:
12
12 1110
PCH
PCH
2
Stack
PCLATH<4:3>
PCLATH<4:0>
5
PCLATH
PCLATH
8 7
8 7
LOADING OF PC IN
DIFFERENT SITUATIONS
2002 Microchip Technology Inc.
PCL
PCL
11
8
Opcode <10:0>
ALU
0
0
Instruction with
PCL as
Destination
GOTO, CALL
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