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Northern Software Supported Devices PIC16F PIC16F1454 PIC16F1455 PIC16F1459 PIC16F1503 PIC16F1507 PIC16F1508 PIC16F1509 PIC16F1512 PIC16F1513 PIC16F1516 PIC16F1517 PIC16F1518 PIC16F1519 PIC16F15213 PIC16F15214 PIC16F15223 PIC16F15224 PIC16F15225 PIC16F15243 PIC16F15244 PIC16F15245 PIC16F15254 PIC16F15255 PIC16F15256 PIC16F1526 PIC16F1527 PIC16F15274 PIC16F15275 PIC16F15276 PIC16F15313 PIC16F15323 PIC16F15324 PIC16F15325 PIC16F15344 PIC16F15345 PIC16F15354 PIC16F15355 PIC16F15356 PIC16F15375 PIC16F15376 PIC16F15385 PIC16F15386 PIC16F1574 PIC16F1575 PIC16F1578 PIC16F1579 PIC16F1613 PIC16F1614 PIC16F1615 PIC16F1618 PIC16F1619 PIC16F1703 PIC16F1704 PIC16F1705 PIC16F1707 PIC16F1708 PIC16F1709 PIC16F17114 PIC16F17115 PIC16F17124 PIC16F17125 PIC16F17126 PIC16F1713 PIC16F17144 PIC16F17145 PIC16F17146 PIC16F17154 PIC16F17155 PIC16F17156 PIC16F1716 PIC16F1717 PIC16F17174 PIC16F17175 PIC16F17176 PIC16F1718 PIC16F1719 PIC16F1764 PIC16F1765 PIC16F1768 PIC16F1769 PIC16F1773 PIC16F1776 PIC16F1777 PIC16F1778 PIC16F1779 PIC16F1782 PIC16F1783 PIC16F1784 PIC16F1786 PIC16F1787 PIC16F1788 PIC16F1789 PIC16F18015 PIC16F18025 PIC16F18026 PIC16F18044 PIC16F18045 PIC16F18046 PIC16F18054 PIC16F18055 PIC16F18056 PIC16F18074 PIC16F18075 PIC16F18076 PIC16F18114 PIC16F18115 PIC16F18124 PIC16F18125 PIC16F18126 PIC16F18144 PIC16F18145 PIC16F18146 PIC16F18154 PIC16F18155 PIC16F18156 PIC16F18174 PIC16F18175 PIC16F18176 PIC16F1823 PIC16F1824 PIC16F1825 PIC16F1826 PIC16F1827 PIC16F1828 PIC16F1829 PIC16F1829LIN PIC16F18313 PIC16F18323 PIC16F18324 PIC16F18325 PIC16F18326 PIC16F18344 PIC16F18345 PIC16F18346 PIC16F18424 PIC16F18425 PIC16F18426 PIC16F18444 PIC16F18445 PIC16F18446 PIC16F18455 PIC16F18456 PIC16F1847 PIC16F18854 PIC16F18855 PIC16F18856 PIC16F18857 PIC16F18875 PIC16F18876 PIC16F18877 PIC16F19155 PIC16F19156 PIC16F19175 PIC16F19176 PIC16F19185 PIC16F19186 PIC16F19195 PIC16F19196 PIC16F19197 PIC16F1933 PIC16F1934 PIC16F1936 PIC16F1937 PIC16F1938 PIC16F1939 PIC16F1946 PIC16F1947 PIC16F505 PIC16F506 PIC16F526 PIC16F527 PIC16F570 PIC16F610 PIC16F616 PIC16F627 PIC16F627A PIC16F628


PIC16F630 PIC16F631 PIC16F636 PIC16F639 PIC16F648A PIC16F676 PIC16F677 PIC16F684 PIC16F685 PIC16F687 PIC16F688 PIC16F689 PIC16F690 PIC16F707 PIC16F716 PIC16F720 PIC16F721 PIC16F722 PIC16F722A PIC16F723 PIC16F723A PIC16F724 PIC16F726 PIC16F727 PIC16F753 PIC16F785 PIC16F818 PIC16F819 PIC16F84A PIC16F87 PIC16F870 PIC16F871 PIC16F872 PIC16F873 PIC16F873A PIC16F874 PIC16F874A PIC16F876 PIC16F876A PIC16F877 PIC16F877A PIC16F88 PIC16F882 PIC16F883 PIC16F884 PIC16F886 PIC16F887 PIC16F913 PIC16F914 PIC16F916 PIC16F917 PIC16F946


Support summary

  • Programming - Yes
  • Debugging provisions - No
ICSP connection


ICSP Connection

Programming is impossible at voltages below 4.5V.


LVP Programming

Low-Voltage Programming (LVP) can only be used for these PIC devices if the LVP configuration bit is enabled. Fresh (unprogrammed) devices have LVP bit set and therefore they can be programmed. It is impossible to disable LVP bit during LVP programming, but if the device has been previously programmed with HVP programmer, the LVP bit may have been disabled.

When brown-out is enabled with BOREN configuration bit, LVP is only possible when the VDD voltage is above the brown-out threshold.

These limitations may be avoided with High-Voltage Programming (HVP). NSDSP-2 can generate high voltage for HVP internally. NSDSP-1 cannot, therefore NSDSP-1 requires an external circuit for HVP.


HVP Programming

NSDSP-2 can generate 12 V voltage internally, and therefore can programPIC16F628A with HVP.

With NSDSP-1, HVP programming is possible, but only with an external HVP circuit.

NSHVX will not work with PIC16F628A because NSHVX produces 9 V high voltage, but this chip requires at least 11 V. If you need NSHVX version which produces 12 V and is suitable for this PIC, please contact us.

Microchip HVP programming specificatons for PIC16F628A require that VPP is applied to MCLR before VDD. Since NSDSP does not have any control of VDD, this requirement cannot be satisfied, however, in our tests the HVP programming has succeeded even without VDD manipulation. Therefore, NSDSP software, starting release 126, supports HVP programming for PIC16F628A.

Be careful. It is possible to brick PIC16F628A with HVP programming if each of these three conditions is met:

  • MCLRE and LVP configuration bits are disabled
  • The PIC uses internal oscillator, or an external oscillator which is connected while the programming takes place
  • RB6 or RB7 pin is driven or T1OSCEN is set within 20 ms from the reset


Programming Benchmarks

We have measured time necessary to program and verify PIC16F628A.

Operation Time
Programming and Verification 9.2s
Programming only 9.1s
Verification only 0.2s

The measurements reflect the time necessary to program/verify the entire chip, including all user programmable memory areas and very slow data EEPROM.



NSDSP cannot be used to debug PIC16F628A.



Microchip PIC16F628A page

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