Datasheet

 1996 Microchip Technology Inc. DS30412C-page 63
PIC17C4X
TABLE 9-9: PORTE FUNCTIONS
TABLE 9-10: REGISTERS/BITS ASSOCIATED WITH PORTE
Name Bit Buffer Type Function
RE0/ALE bit0 TTL Input/Output or system bus Address Latch Enable (ALE) control pin.
RE1/OE
bit1 TTL Input/Output or system bus Output Enable (OE) control pin.
RE2/WR
bit2 TTL Input/Output or system bus Write (WR) control pin.
Legend: TTL = TTL input.
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Value on
Power-on
Reset
Value on all
other resets
(Note1)
15h, Bank 1 PORTE
— — — — — RE2/WR RE1/OE RE0/ALE ---- -xxx ---- -uuu
14h, Bank 1 DDRE Data direction register for PORTE ---- -111 ---- -111
Legend: x = unknown, u = unchanged, - = unimplemented read as '0'. Shaded cells are not used by PORTE.
Note 1: Other (non power-up) resets include: external reset through MCLR and the Watchdog Timer Reset.