PIC16C926 Microchip Technology Inc., PIC16C926 Datasheet - Page 38

• Manufacturer Part Number: PIC16C926
• Description: 64/68-pin Cmos Microcontrollers With Lcd Driver
• Manufacturer: Microchip Technology Inc.

PIC16C925/926
4.5
PORTE is a digital input only port. Each pin is multi-
plexed with an LCD segment driver. These pins have
Schmitt Trigger input buffers.
EXAMPLE 4-5:
TABLE 4-9:
TABLE 4-10:
DS39544A-page 36
Legend: ST = Schmitt Trigger input
09h
89h
10Dh
Legend: Shaded cells are not used by PORTE.
Address
Note 1: On a Power-on Reset, these pins are
BCF STATUS,
BSF STATUS,
BCF LCDSE,
BCF LCDSE,
BCF LCDSE,
RE0/SEG05
RE1/SEG06
RE2/SEG07
RE3/SEG08
RE4/SEG09
RE5/SEG10
RE7/SEG27
RE6/SEG11
Name
PORTE and TRISE Register
2: To configure the pins as a digital port, the
PORTE
TRISE
LCDSE
Name
configured as LCD segment drivers.
corresponding bits in the LCDSE register
must be cleared. Any bit set in the LCDSE
register overrides any bit settings in the
corresponding TRIS register.
PORTE FUNCTIONS
SUMMARY OF REGISTERS ASSOCIATED WITH PORTE
RP0
RP1
SE27
SE5
SE9
PORTE Data Direction Control Register
Bit#
bit0
bit1
bit2
bit3
bit4
bit5
bit6
bit7
SE29
Bit 7
INITIALIZING PORTE
RE7
;Select Bank2
;
;Make all PORTE
;and PORTG<7>
;digital inputs
Buffer Type
SE27
Bit 6
RE6
ST
ST
ST
ST
ST
ST
ST
ST
SE20
Bit 5
RE5
Digital input or Segment Driver05.
Digital input or Segment Driver06.
Digital input or Segment Driver07.
Digital input or Segment Driver08.
Digital input or Segment Driver09.
Digital input or Segment Driver10.
Digital input or Segment Driver11.
Digital input or Segment Driver27 (not available on 64-pin devices).
SE16
Bit 4
RE4
Preliminary
SE12
Bit 3
RE3
FIGURE 17-1: PORTE BLOCK DIAGRAM
LCD
Segment Data
LCD Segment
Output Enable
LCD
Common Data
LCD Common
Output Enable
LCDSE<n>
Data Bus
RD Port
RD TRIS
Bit 2
RE2
SE9
Bit 1
RE1
SE5
Function
V
Bit 0
RE0
SE0
DD
Q
2001 Microchip Technology Inc.
EN
0000 0000
1111 1111
1111 1111
EN
Power-on
Value on
D
Reset
LCD Output pin
Schmitt
Trigger
Input
Buffer
Digital Input/
Value on all
0000 0000
1111 1111
1111 1111
RESETS
other