PIC18FXX20 Datasheet, PDF (126/366 Pages) Microchip Technology – 64/80-Pin High Performance 1 Mbit Enhanced FLASH Microcontrollers with A/D

PIC18FXX20
TABLE 10-15: PORTH FUNCTIONS
Name
Bit#
Buffer Type
Function
RH0/A16
bit0
ST/TTL⁽¹⁾
Input/output port pin or address bit 16 for external memory interface.
RH1/A17
bit1
ST/TTL⁽¹⁾
Input/output port pin or address bit 17 for external memory interface.
RH2/A18
bit2
ST/TTL⁽¹⁾
Input/output port pin or address bit 18 for external memory interface.
RH3/A19
bit3
ST/TTL⁽¹⁾
Input/output port pin or address bit 19 for external memory interface.
RH4/AN12
bit4
ST
Input/output port pin or analog input channel 12.
RH5/AN13
bit5
ST
Input/output port pin or analog input channel 13.
RH6/AN14
bit6
ST
Input/output port pin or analog input channel 14.
RH7/AN15
bit7
ST
Input/output port pin or analog input channel 15.
Legend: ST = Schmitt Trigger input, TTL = TTL input
Note 1: Input buffers are Schmitt Triggers when in I/O mode and TTL buffers when in System Bus or Parallel Slave
Port mode.
TABLE 10-16: SUMMARY OF REGISTERS ASSOCIATED WITH PORTH
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR, BOR
TRISH PORTH Data Direction Control Register
1111 1111
PORTH Read PORTH pin/Write PORTH Data Latch
xxxx xxxx
LATH
Read PORTH Data Latch/Write PORTH Data Latch
xxxx xxxx
ADCON1
—
— VCFG1 VCFG0 PCFG3 PCFG2 PCFG1 PCFG0 --00 0000
MEMCON EBDIS — WAIT1 WAIT0 —
—
WM1 WM0 0-00 --00
Legend: x = unknown, u = unchanged, - = unimplemented. Shaded cells are not used by PORTH.
Value on
all other
RESETS
1111 1111
uuuu uuuu
uuuu uuuu
--00 0000
0-00 --00
DS39609A-page 124
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 2003 Microchip Technology Inc.