
PIC18F6585/8585/6680/8680
DS30491C-page 148
2004 Microchip Technology Inc.
TABLE 10-15: PORTH FUNCTIONS
TABLE 10-16: SUMMARY OF REGISTERS ASSOCIATED WITH PORTH
Name
Bit#
Buffer Type
Function
RH0/A16
bit 0
ST/TTL(1)
Input/output port pin or address bit 16 for external memory interface.
RH1/A17
bit 1
ST/TTL(1)
Input/output port pin or address bit 17 for external memory interface.
RH2/A18
bit 2
ST/TTL(1)
Input/output port pin or address bit 18 for external memory interface.
RH3/A19
bit 3
ST/TTL(1)
Input/output port pin or address bit 19 for external memory interface.
RH4/AN12
bit 4
ST
Input/output port pin or analog input channel 12.
RH5/AN13
bit 5
ST
Input/output port pin or analog input channel 13.
RH6/AN14/P1C(2)
bit 6
ST
Input/output port pin or analog input channel 14.
RH7/AN15/P1B(2)
bit 7
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.
2:
Alternate pin assignment when ECCPMX configuration bit is cleared.
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR, BOR
Value on
all other
Resets
TRISH
PORTH Data Direction Control Register
1111 1111
PORTH
Read PORTH pin/Write PORTH Data Latch
xxxx xxxx
uuuu uuuu
LATH
Read PORTH Data Latch/Write PORTH Data Latch
xxxx xxxx
uuuu uuuu
ADCON1
—
VCFG1 VCFG0 PCFG3 PCFG2 PCFG1 PCFG0
--00 0000
MEMCON(1)
EBDIS
—
WAIT1
WAIT0
—
WM1
WM0
0-00 --00
Legend: x = unknown, u = unchanged, – = unimplemented. Shaded cells are not used by PORTH.
Note 1:
This register is held in Reset in Microcontroller mode.