PIC17CXX

The PIC17CXX is programmed using the TABLWT instruction. The table pointer points to the internal EPROM location start. Therefore, a user can program an EPROM location while executing code (even from internal EPROM). This programming specification applies to PIC17CXX devices in all packages. For the convenience of a programmer developer, a"program & verify" routine is provided in the on-chip test program memory space, the program resides in ROM and not EPROM. Therefore, it is not erasable. The"program/verify" routine allows the user to load any address, program a location, verify a location or increment to the next location. It allows variable programming pulse width.

Features of the The PIC17CXX are:(1)Load any arbitrary 16-bit addressto start program and/or verify at that location;(2)Increment address to program/verify the next
location;(3)Allows arbitrary length programming pulse width;(4)Following a "verify" allows option to program the same location or increment and verify the next location;(5)Following a "program" allows options to program the same location again, verify the same location or to increment and verify the next location.

The absolute maximum ratings of theThe PIC17CXX can be summarized as:(1)Supply voltage during programming:4.75V to 5.25V;(2)Supply current during programming:50mA;(3)Supply voltage during verify:VDD min to VDD max;(4)Voltage on VPP/MCLR pin during programming:12.75V to 13.25V;(5)Programming current on VPP/MCLR pin:50mA;(6)Osc/clockin frequency during programming:4MHz to 10MHz;(7)Instruction cycle:1s to 0.4s;(8)RC<7:0>, RB<7:0> valid to RA1 or RA0 :Address/Data input setup time:0s;(9)RA1 or RA0­ to RB<7:0>,RC<7:0> invalid ; Address data hold time:10 TCY s;(10)Programming pulse width:10s to 1000s.